Second conversion: Remove epsilon

Finished Remove epsilon conversion

• code re-factoring
• bug repair
• add 2 examples
• add SHOWCORRECT and BACK user solution functionality to second conversion
• more info in commit messages

RegExpToFA bugfixes

• Add icons to FA widget.
• Improve stability.
• Improve user comfort.
• Some code refactoring.

Added examples and some bugfixes

Added examples and bug fixes.
Builded for Windows 7 x86.

RegExp to FA - Implemented basic functionality

Play mode

• Full functionality.

Step mode

• Automatic checking works.
• Prew/Next step buttons are not working.
• Should be nice if algorithm highlights actual alright done step (like in Play mode).

Check mode

• Check solution button works.
• Show solution / Back button does not work.