Make the cable feature speak English like the rest of the interface

English has been the source language of the program for a while now
(upstream: "Make English the source language ..."), the cable feature
came in with French ones: about 200 translatable strings over 30 files,
the two settings pages built from .ui files, four comments and one test
which asserted the old wording (blocking review comment by ispyisail).

The wording follows what the code base already uses where it exists:
Plant (=) and Location (+) as qetinformation.cpp names those element
information, Designation for the field the cable form calls its BMK,
Length, Sheet for folio, Automatic numbering, Cross-reference, and Right
aligned / Centred / Left aligned the way cabletextformatdialog.cpp
already spells the three alignment entries.

Two things are more than a word-for-word swap:

- xrefpropertieswidget.cpp:291 wrote the label of the master field on
  every type change with a hardcoded tr("Maitre"), so the English
  "Master" coming from the .ui was overwritten for every type, cable or
  not: a real bug next to being French. The wording now comes back from
  the .ui and only a cable renames the field to "Text:", so the two
  cannot drift apart again.

- tst_cabletypelist kept asserting that a new catalogue is *labelled*
  in French. That label line is the translated header and reads English
  now. The test still reads files with French headers on purpose:
  headerAliasMap() keeps the five old French labels as aliases next to
  the English ones, so catalogues written by earlier builds, including
  the one the reviewer reads her own types from, keep loading.

The .ts files are deliberately not regenerated here. Upstream
regenerates them on master, as it did for the language change itself,
and a translation is keyed on the source string: while the sources were
French a German user saw French in the cable dialogs, and an English
source string with no translation yet shows as it is.

Build clean, ctest 92/93, the one failure being the pre-existing
headless tst_menubarkeyboard.

sources/cable/cablepropertieswidget.cpp

@@ -49,16 +49,16 @@ CablePropertiesWidget::CablePropertiesWidget(QWidget *parent) :
 	grid->setHorizontalSpacing(6);
 	grid->setVerticalSpacing(3);
 
-	auto *plan = new QLabel(tr("Plan",
+	auto *plan = new QLabel(tr("Drawing",
 							   "column header: the drawing shows this field"), this);
 	plan->setAlignment(Qt::AlignCenter);
-	plan->setToolTip(tr("À cocher pour écrire ce champ sur le plan.",
+	plan->setToolTip(tr("Tick to write this field on the drawing.",
 						"tooltip of the tick before each field"));
 	grid->addWidget(plan, 0, 1, Qt::AlignCenter);
 
 	int row = 1;
 	addField(grid, row++, QStringLiteral("designation"),
-			 tr("Désignation"), &m_designation, &m_show_designation);
+			 tr("Designation"), &m_designation, &m_show_designation);
 	const int type_row = row;
 	addField(grid, row++, QStringLiteral("type"),
 			 tr("Type"), &m_type, &m_show_type);
@@ -71,26 +71,26 @@ CablePropertiesWidget::CablePropertiesWidget(QWidget *parent) :
 	auto *pick_type = new QPushButton(this);
 	pick_type->setFocusPolicy(Qt::NoFocus);
 	pick_type->setIcon(QET::Icons::Cable);
-	pick_type->setToolTip(tr("Choisir le type de ce câble dans la liste des "
-							 "types de câbles…"));
+	pick_type->setToolTip(tr("Choose the type of this cable from the list of "
+							 "cable types…"));
 	connect(pick_type, &QPushButton::clicked,
 			this, &CablePropertiesWidget::typeChangeRequested);
 	grid->addWidget(pick_type, type_row, 4, Qt::AlignRight | Qt::AlignVCenter);
 
 	addField(grid, row++, QStringLiteral("installation"),
-			 tr("Installation (=)"), &m_installation, &m_show_installation);
+			 tr("Plant (=)"), &m_installation, &m_show_installation);
 	addField(grid, row++, QStringLiteral("location"),
-			 tr("Localisation (+)"), &m_location, &m_show_location);
+			 tr("Location (+)"), &m_location, &m_show_location);
 	addField(grid, row++, QStringLiteral("length"),
-			 tr("Longueur"), &m_length, &m_show_length);
+			 tr("Length"), &m_length, &m_show_length);
 
 		//The colours of the cores: one setting for every one of them at
 		//once, since they are written in one row along the line and are
 		//read as one row.
-	auto *cores_label = new QLabel(tr("Couleurs des âmes"), this);
+	auto *cores_label = new QLabel(tr("Core colors"), this);
 	cores_label->setAlignment(Qt::AlignRight | Qt::AlignVCenter);
-	cores_label->setToolTip(tr("La police des couleurs de toutes les âmes "
-							   "de ce câble, écrites le long de la ligne."));
+	cores_label->setToolTip(tr("The font of the colors of all the cores "
+							   "of this cable, written along the line."));
 	grid->addWidget(cores_label, row, 0, Qt::AlignRight | Qt::AlignVCenter);
 	addFormatButton(grid, row, QStringLiteral("cores"));
 
@@ -98,18 +98,18 @@ CablePropertiesWidget::CablePropertiesWidget(QWidget *parent) :
 		//one across it, in pixels, moving the label as one thing --
 		//installation, place and designation over the line, type and
 		//length under it -- and the line not at all.
-	addOffsetRow(grid, row + 1, tr("Position du texte"),
-				 tr("Décale tout le texte du câble : installation, emplacement "
-					"et désignation d'un côté, type et longueur de l'autre. "
-					"La ligne, les slashes et le câblage restent en place. "
-					"10 px font une case de la grille."),
+	addOffsetRow(grid, row + 1, tr("Text position"),
+				 tr("Shifts all the cable text: plant, location "
+					"and designation on one side, type and length "
+					"on the other. The line, the slashes and the "
+					"wiring stay in place. 10 px make one grid cell."),
 				 &m_text_offset_x, &m_text_offset_y);
 
 		//And where the row of colours stands from the slashes it names.
-	addOffsetRow(grid, row + 2, tr("Position des couleurs"),
-				 tr("Décale les couleurs des âmes par rapport à leurs slashes. "
-					"Les slashes, les entrées et le câblage restent en place. "
-					"10 px font une case de la grille."),
+	addOffsetRow(grid, row + 2, tr("Core colors position"),
+				 tr("Shifts the core colors relative to their slashes. "
+					"The slashes, the entries and the wiring stay in place. "
+					"10 px make one grid cell."),
 				 &m_core_offset_x, &m_core_offset_y);
 
 	grid->setColumnStretch(2, 1);
@@ -134,7 +134,7 @@ void CablePropertiesWidget::addField(QGridLayout *grid,
 {
 	auto *label = new QLabel(name, this);
 	auto *check = new QCheckBox(this);
-	check->setToolTip(tr("À cocher pour écrire ce champ sur le plan.",
+	check->setToolTip(tr("Tick to write this field on the drawing.",
 						"tooltip of the tick before each field"));
 	auto *field = new QLineEdit(this);
 	field->setClearButtonEnabled(true);
@@ -284,13 +284,13 @@ void CablePropertiesWidget::refreshFormatButton(const QString &key)
 	button->setText(tr("%1 pt").arg(QString::number(font.pointSizeF(), 'g', 3)));
 
 	const QString tip = coresKey(key)
-			? tr("Police, taille et style des couleurs des âmes.")
-			: tr("Police, taille, style et alignement de ce texte.");
+			? tr("Font, size and style of the core colors.")
+			: tr("Font, size, style and alignment of this text.");
 	const CableTextFormat format = m_formats.value(key);
 	const bool its_own = !format.font.isEmpty() || format.alignment != 0;
 	button->setToolTip(tip + QLatin1Char(' ') + (its_own
-			? tr("Réglé pour ce câble.")
-			: tr("Valeur définie dans les préférences.")));
+			? tr("Set for this cable.")
+			: tr("Value defined in the preferences.")));
 }
 
 /**