Modified SourceEditor::load_text() :
After the document has been loaded, the cursor's position is set to the document's start. By doing this, the document is displayed at its beginning; otherwise, the last lines would be displayed.
cpplint'ed the code : three errors still remain
Merge branch 'feature144' into dev
Modified SourceEditor::load_text() : after the document has been loaded, the
cursor's position is set to the document's start. By doing this, the document
is displayed at its beginning; otherwise, the last lines would be displayed.