Remove .DS_Store and add to .gitignore so it doesn't come back
Money formatting improvements:

* Don't wrap between the number and the currency image.
* Display negative values in red.

Fixes rubensayshi/gw2spidy#47.
Merge commit '5287b0f' into moneyformatting
Merge commit 'dd86400' into moneyformatting
removed double negative from money formatting
merged "moneyformatting"