Allow theme-customizable water and girder

Step 4: repair girder rendering (girder is 32bit now)

Step 3: Maps are rendered correctly, but without objects yet

Step 2: painted maps loading correctly

Start implementing support for 32bit sprites concerned in map generation process. Step 1: forts are loading correctly. Everything else is broken

This needs to be changed too

- Fix Qt's runtime warning - This fix probably eliminates network problems

Add "Castle" map copyright info

Disallow AI to hurts itself with mortar (in quite rare cases it tries to shoot directly up)

Update frontend background

Oops, fix map install path

Revert accidental nsis installer generator regression

Some more customizations

- Start work on team select widget - Customize QListWidget view (chat, demos list)

Fix max teams detection

Better settings button behavior

Finally fix save button look

Set bg color for QPushButton

Add Castle map

correct restoring window size after fullscreen mode

Customize map container look

fullscreen disabling fixed

Frontend Fullscreen mode added

Customize SpinBox look (not finished)

Customize LineEdit look

Various build system improvements

- Fix grenade sound - Higher screen size restrictions

Try to modify QGroupBox view

Fix small glitch when placing girder on map

Customize checkboxes