Don't crash when missing portrait and name data in GameStateNew

Fixes #862
Merge pull request #863 from dorkster/bugfixes

Don't crash when missing portrait and name data in GameStateNew
Merge pull request #861 from igorko/powers

Move tooltip generation to separate function for reusing
Use full path for NPC vox_intro
Use full paths for Power animations/soundfx
Use full path for MenuPowers tab_tree
Use full paths for enemy animations
Use full path for loot animations
Use full path for NPC animations
Cleanup uneccessary variables
Use full paths for map music
Use full path for tilesetdefs
Merge pull request #865 from dorkster/config_cleanup

Use full file paths for several config variables
Fix typo in Speed tooltip and remove temp fix
Remove miss leading comment regarding UNITS_PER_PIXEL_X
Convert engine.be.po to UTF-8
Regenerate language translation files
Remove english translation file
Merge pull request #867 from stefanbeller/master

Regenerate language files
Updated Norwegian Bokmål translation based on the regenerated translation template