Merge pull request #119 from clintbellanger/master

merge from master
Fix requires_not_status for dialog nodes
Append '_status' to 'visible_requires_not' in MenuPowers
Merge pull request #122 from clintbellanger/master

merge from master
EnemyGroups do not have multiple warnings on failure.
Maprenderer: Rewrite enemy spawning loop a little cleaner
Merge pull request #798 from dorkster/status_fixes

Status requirement fixes
Merge pull request #799 from stefanbeller/fixenemy_groups

Fixenemy groups: Warning messages
Fix accessing member of enemy_lev in MapRenderer
Merge pull request #800 from dorkster/bugfixes

Fix accessing member of enemy_lev in MapRenderer
Partly revert 04175466 to fix segfault and check for type being empty
Merge pull request #801 from stefanbeller/lastfix

Partly revert 04175466 to fix segfault and check for type being empty
Handle multiple occurrences of requires_power
Merge pull request #802 from RyanDansie/multiple_requires_power

Handle multiple occurrences of requires_power