Load background for `Falltergeist::PipBoyState`
Add more buttons to `Falltergeist::PipBoyState`
Add new button type: `TYPE_PIPBOY_ALARM_BUTTON`
Add alarm button to `Falltergeist::PipBoyState`
Create `MonthCounter` to display current month in PipBoy
Use `MonthCounter` in `PipBoyState`
Merge branch 'master' into pipboystate

Conflicts:
	src/UI/ImageButton.cpp
	src/UI/ImageButton.h
Merge pull request #74 from smaximov/pipboystate

Pipboystate