basic martial arts functionality.

* added martial arts as first-class objects instead of items, stored in
player::ma_styles
  - martial arts attach diseases to player representing buffs (see ma_buff),
    restricted by skills and current weapon-wielding status
  - can attach buffs on-hit or "statically" (on player::reset)
  - buffs can stack based on their max_stacks trait, and last for buff_duration
    turns
  - martial arts data stored in data/raw/martialarts.json, all
    buffs/conditions/etc are editable
* implemented karate in new JSON system
* added a "test_karate" style, will remove later
Merge branch 'master' into martial_arts
Fully functional martial arts framework v1

* techniques work
* technique restrictions work
* technique custom strings work
* added two "demo" styles, coward and berserker
* Martial Arts Training now gives all implemented styles (karate, aikido, demo
styles). Other martial arts traits won't do anything because they still give you the
old martial arts items which are no longer accessible.
Merge branch 'master' into martial_arts
small json bugfix
More martial arts changes

* added capoeira, judo, tai chi
* added "throw_immune", "block", "block_<stat>" as buff effects
* buffs can now depend on other buffs via "req_buffs"
added krav maga
started breaking out techniques
Merge branch 'master' into martial_arts
stopping point, still doing techniques
non-flaming offensive techniques work
Merge branch 'master' into martial_arts

Conflicts:
	itype.h
more ma-related changes
Merge branch 'master' into martial_arts

Conflicts:
	game.h
	monmove.cpp
	player.cpp
	pldata.h

Also added martial arts/techniques json data + character creation
added more weapon techniques
new character creation now properly gives capoeira and not taekwondo
moved burstfire mode text to not overlap with hunger text
electroshock/heat drain bionics now properly display text again
Merge branch 'master' into martial_arts

Conflicts:
	item.cpp
	itype.h
	melee.cpp
	pldata.h
Merged sdlcurse.cpp and sdltiles.cpp