IntegrityController implementation
AccessController: admin check added
Using Path class for working with file paths from now. Absolute paths
changed to relative
Notepad added. Some changes in Crypto.java
Crypto fix. Images for notepad added
Merge branch 'mamontov'
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