Fix server crash on client disconnect

- Fix build of server (has some bugs now) - Start converting client

Start refactoring standalone server (prepare to change protocol)

Don't allow team with the same name from the same client (helps with double add due to lags)

Remove deprecated stuff

Fix a bug screwing team selection up in network game (REMOVETEAM message doesn't have teamID, and after removing the team QMap still contains old info, when add and remove team with the same name, total hedgehogs number will be decreased by first team hh number)

Fix arithmetic bug in CHedgehogerWidget

Add team surrender flag

- Fix water rise - Fix game crash when a hedgehog which turn is next gets drawn by water rise

Try to adjust flame parameters

Prevent AI to damage a teammate when trying to dig with firepunch (patch not tested)

Start flames rework

- Hedgehog doesn't take off hat when shooting from shotgun - Don't show empty hat sprite

Predefined team can have customized hat

Bot could use firepunch if it doesn't find anything else useful, and it has land above his head

Update Spanish and Polish translations

Fix frontend

- Customize spinbox arrows - Optimize frontend's images

Reorganize team edit page a little (save a lot of space)

Move preview icons into comboboxes

Seduction animation

A bit larger heart

- Update Italian translation - Almost finished seduction weapon

Enable back the ability to see chosen team color in team widget

Full-size hedgehog in hats selection widget

Draw a hedgehog under the hat in hats combobox

Update watermelon sprite

Use new sounds

Add new sound files

- Unbreak previously broken themes - Verbose error message helping with themes problems