# moved event handlers for connections from canvasController to relationTabController
# moved initUnitEventHandlers() from canvasController to unitController
# moved chooseMetaIcon() from unitController to formatSelections
+ added optional index parameter to addContextInfo() in unitModel
+ added getItemByID() to contextInfoListModel
# started correcting German umlauts in dictionaries
# changed data structure of array_multiSelectionContextInfos:
   1. "id" is now context ID, "text" its translation;
   2. new items now get pushed to the end of the array, changed items stay where they are
# changed changeColorMultiContextInfos() into formatMultiContextInfosElements()
TODO: editing items in multi selection does not work as it should (see latter changes)