Log In Dialog added

to be fixed though...
Crypto fix
Merge https://github.com/BMK-2331/safeguard into interface

Conflicts:
	src/safeguard/AccessController.java
	src/safeguard/Crypto.java
	src/safeguard/DatabaseHelper.java
	src/safeguard/Engine.java
	src/safeguard/IntegrityController.java
	src/safeguard/SafeGuard.java
Merge from master
Merge pull request #3 from BMK-2331/interface

Interface to Master