Application.java: changed save data on shutdown default to false.

DbWrapper.java: Added method getVectorOf() for retrieving result set data as a matrice (Vector<Vector<Object>> to meet DefaultTableModel requirements.

DatabaseSetup.java: Added rudimental Error result checkings from input. Nothing special.

MerlinLogic: loginToDatabase now returns a boolean array to indicate the results of input checking.
Merge branch 'master' of https://github.com/Isaisaisa/DB-Merlin

Conflicts:
	Aufgabe_3/src/merlin/gui/MerlinLogin.java