Add functions to get the effect affecting resistance and weakness for another effect
Move code for listing effect sources to the spell management classes
Fix uninitialized mSkill/mAttribute for spellmaker spells
Don't advance acrobatics skill for NPCs
Implement Resist & Weakness effects
Implement damage tick effects
Implement RestoreHealth/Magicka/Fatigue
Add a crash catcher for unix. When encountering a fatal signal, attach gdb and log backtrace.
Merge remote-tracking branch 'scrawl/master'
Add missing include for signals to make travis happy
Change is_debugger_attached to a different hack
Merge remote-tracking branch 'scrawl/crashcatcher'
Closing message boxes with numpad enter
fixed expression in if statement