Add Polish translation for campaigns and new missions

Update pl.txt translation file

Backed out changeset c162995831d8

Backed out changeset 058a5d373e4a

Backed out changeset d08afea02908

Minor pl.txt update

Update and complete Polish frontend translation

Fix Hedgewars going into suspension mode (game freezes) when windows got minimized

Update Polish translation (frontend, 3 strings missing)

Fix broken cancel button on the login window (bug #373)

ACF6: Make sure player only gets portal gun at the portal sequence, and not a pile full of weapons and ropes

ACF3: Mention mines time in a sequence where it has been forgotten String freeze is maintained, the string is already in stub.lua

ACF2: Fix Lua error spam when Leaks A Lot died in same turn as weaklings, also do other minor tweaks - Grant skip to Dense Cloud and Leaks A Lot again, after refusing the cyborg's offer - Fix flow chart - String freeze is maintained, the new string is already in stub.lua.

Fix some German translations in ClimbHome and ACF

Add comments for all A Classic Fairytale missions to summarize the story in a flow chart-like fashion

Use SDL_SetRelativeMouseMode to detect mouse movements, fixes xinput issues

HedgeEditor: Define fallback flag/voice/fort/grave when saving level data

HedgeEditor: Don't change mode in background when pressing left/right w/o amAirAttack selected

Fix ammo menu, placement and camera movement keys not working in ammo menu

Fix CheckWorldWrap not correctly checking for bounce edge. Also fix teleport @ bounce edge

Update cabal file

Fix bad LuaGoals comparison for pas2c builds

Update small preview image of Basketball and BasketballField maps

ACF7: Fix two weird thinking bubbles which should be speech bubbles

ACF7: Fix no animation starting for some possible scenes

Oops. Changelog was wrong, the error message spam was for ACF8, not ACF7

ACF7: Fix possible Lua error spam in intro sequence This was caused by a race of onGearDelete vs AnimationSetup. If AnimationSetup came first, it uses old values from the natives table. The solution is to force the code to guarantee that AnimationSetup always coms after deleting gears in the natives table.

Fix some German typos and change a translation word (Ziele → Zielscheiben)

Disable hog control after winning target practice challenge

ACF5: Fix final animation being stuck when the cyborg's way to the right is blocked Fixed with the new maxMoveTime parameter in AnimMove. If cyborg didn't reach its destination in 7000ms, the move anim is skipped and the sequence just continues.