Added bare bone of "Access Condition Tool" (De/Encode ACs).
Made AC Tool accessible from tools and dump editor menu.
Some basic progress on the Access Condition tool.

Added the some basic layout elements.
Implemented some basic functions (clipboard).
Restructured code (copy to/get from clipboard are now common methodes).
Updated target version to Android 4.4 (API 19).
Added the "XML Declaration" to all XML files.
Human readable Access Conditions are now choosable (AC Tool).
Fixed some minor bugs in layout and string resources.
Updated documentation.
Added icon for Access Condition Tool.
Added common method to convert an AC matrix to AB bytes.

This method is for later use (in Access Condition tool).
Refactored some methods to be more consistent.
Encode Access Conditions is now working (AC Tool).

(Needs more testing.)
Decode Access Conditions is now working (AC Tool).

Bugfix: Fixed bug in acMatrixToACBytes(...) leading to wrong encoding.
Bugfix: The selectable ACs are now based on the readability of key B.

(Needs more testing.
Javadoc is missing.)
Updated documentation.
Bugfix: Reset all data block ACs if readability of key B changes.
Changed layout of AC Tool for better usability.
Bugfix: Do not reset the block ACs during a decode procedure.
Merge branch 'ac_de_encoder'