#375 Update all class and race descriptions for greater clarity

[Rebecca Kelly]

This overhauls all of the class and race descriptions. Flavour text is left mostly untouched, but the informational headers at the start of the race descriptions are made (hopefully) clearer and redundant information is cleared out, and similar headers are added to all of the class descriptions so it's clear to the player what abilities and items each class starts with.

[Rebecca Kelly]

Note: this was written on top of /patches/374 and the description for Barbarian reflects that. If you don't apply 374, or apply it only partially, then when applying this patch, player/class/Warrior/barbarian.arc should be edited so that the "Special:" line reflects the actual barbarian skillset.

[Nicolas Weeger]

Applied as revision 21396, many thanks :)