This commit adds new toolbar to the GUI for fast and easy switching of
different warning//error categories. The icons are currently just
placeholders until more descriptive icons are created.
Fixes ticket #436 (GUI: All style -severity). The possible style errors can be now selected visible / hidden so all severities have their own menu item.
Also added QSetting value names to common.h
Work is halfway on both translations and .ui files.
I added a very quick and rough finnish translation.
The program now requires the translation files to be created before running
that can be done with lrelease gui.pro.
To compile the whole GUI one must do the following
cd gui
qmake
lrelease gui.pro
make