Fix 'dsFunction' (Kate syntax file) not colored in TextEditor

- Added the right TextFormat for dsFunction
- Added TODO comments for missing dsError and dsAlert

Task-number: QTCREATORBUG-10788
Change-Id: I31862971ac5b47f13036aa9c55552778ad88d4ee
Reviewed-by: Thomas Boutroue <thebootroo@gmail.com>
Reviewed-by: David Schulz <david.schulz@digia.com>

src/plugins/texteditor/generichighlighter/highlighter.cpp

@@ -71,9 +71,9 @@ Highlighter::Highlighter(QTextDocument *parent) :
                    << TextEditor::C_NUMBER
                    << TextEditor::C_STRING
                    << TextEditor::C_STRING
-                   << TextEditor::C_TEXT
-                   << TextEditor::C_TEXT
-                   << TextEditor::C_TEXT
+                   << TextEditor::C_TEXT // TODO : add style for alert (eg. yellow background)
+                   << TextEditor::C_TEXT // TODO : add style for error (eg. red underline)
+                   << TextEditor::C_FUNCTION
                    << TextEditor::C_TEXT
                    << TextEditor::C_TEXT;
     }