gitignore: add install_manifest.txt file
Pack spritesheet images (including minicore and noalpha)

This commits processes the following files:

Avatar:
iron buckler female
iron buckler male

Enemies:
stealth

Powers:
bear_trap
caltrops
throw_axe
throw_knife

All those files (image and animation definition) were copied over to
minicore and processed there as well.

The images were spritepacked and the animation definitions files
were updated accordingly.
Increase gold amounts dropped from containers

Also, damage is tweaked for statues that shoot at the hero (one in
Maddox's lair and three in the Brothers' lair).
Update data.fr.po

This commit was rebased on clintbellangers repository by
stefanbeller.
Fix indentation.
Add unescape() and unescape all strings returned to caller.
Minicore: Add tower to tileset
Update engine.fr.po
Merge remote-tracking branch 'upstream/master'
Update russian translation for alpha_demo and fantasycore
Change quest structure to have the reanimated skeleton at first.

Also some reward values have been adjusted.
The reanimated skeleton definitely drops the miners gloves now, but it is
only there if you're actually searching for it (in the quest).
Disable error messages, which are meaningless for 0.18.
Don't activate passives during transformation process

This fixes a bug where a transformed passive power would activate before
clearing the hero's effects. The most common occurence of this bug was
War Cry's immunity effect blocking the speed penalty for the Stealth
transform.
Fixes to Russian translation: new terminology
Merge pull request #537 from stefanbeller/noerrors

Disable error messages, which are meaningless for 0.18.
Merge pull request #536 from cjsthompson/master

Update engine.fr.po
Merge pull request #534 from hean01/master

Added unescape functionality to MessageEngine.
Merge pull request #540 from dorkster/bugfixes

Don't activate passives during transformation process
Merge pull request #263 from stefanbeller/fr

Update data.fr.po
Merge pull request #266 from stefanbeller/grassland_minicore

Minicore: Add tower to tileset