* revised texts in project setup ui
* fixed crash during project setup when CDB file is empty
* fixed row height of project location in CDB project setup
* changed help texts
* use help buttons instead of descriptions in dialogs
* fixed show files button not up-to-date with directory list box
* fixed source file extensions shown in cdb setup
* refactored size and content setting for project content classes
* Added class QtTextEditDialog for displaying text content
* Added edit button to QtDirectoryListBox
* Replaced show files button dialog using QtProjectWizzardContentSourceList with QtTextEditDialog
* Added language specific Project and ProjectSettings
* moved project specific code from Application to Project
* made Application a singleton
* added handleDialog method to Application which displays a dialog window and waits for user input
* Added ScopedFunctor that executes a function when deleted
malte_langkabel