Merge pull request #140 from topilski/master

CMake fixed according to the new requests. Implementation of Index Management started (#74)
Merge pull request #143 from topilski/master

toUtf8() instead of toAscii()
Merge pull request #144 from topilski/master

View/Refresh context menu items for Indexes subcategory
Build documentation (Linux only) #124
fix CMake architecture auto definitions, added icons to header EditIndexDialog, replace QTextEdit to QScincila, fix checkbox isunique and isbackground properties of index