Fix style, costs, and descriptions of professions.

* Standardized the indentation and spacing of the entire professions file.
* Adjust profession costs based on #3093
* Mechanic and Tailor both start with a level in the relevant skill instead of a training book, just like every other profession.
* Since your starting equipment is now displayed, various redundant "You start with &lt;list of equipment&gt;" lines were removed from descriptions. Where possible, flavor text was put in their place.