fix typos and whitespace

sources/ElementsCollection/elementcollectionhandler.cpp

@@ -399,7 +399,7 @@ ElementsLocation ElementCollectionHandler::createDir(ElementsLocation &parent, c
 	@brief ElementCollectionHandler::importFromProject
 	Import the element represented by location to the embedded collection
 	of project at the same path.
-	location must represente an element owned by a project embedded collection
+	location must represent an element owned by a project embedded collection
 	@param project : project where copy the element
 	@param location : location to copy
 	@return true if import with success

sources/ElementsCollection/elementscollectionwidget.cpp

@@ -529,7 +529,7 @@ void ElementsCollectionWidget::newElement()
 	elmt_wizard.exec();
 
 	foreach (QETElementEditor *element_editor,
-		 QETApp::instance()->elementEditors())
+			 QETApp::instance()->elementEditors())
 		connect(element_editor,
 			&QETElementEditor::saveToLocation,
 			this,
@@ -713,7 +713,7 @@ void ElementsCollectionWidget::locationWasSaved(
 		const ElementsLocation& location)
 {
 	//Because this method update an item in the model, location must
-	//represente an existing element (in file system of project)
+	//represent an existing element (in file system of project)
 	if (!location.exist())
 		return;
 

sources/ElementsCollection/elementslocation.cpp

@@ -591,7 +591,7 @@ bool ElementsLocation::isWritable() const
 /**
 	@brief ElementsLocation::projectCollection
 	@return
-	If this location represente a item in an embedded project collection,
+	If this location represents an item in an embedded project collection,
 	return this collection else return nullptr.
 */
 XmlElementCollection *ElementsLocation::projectCollection() const