[bug 968202] Add UI strings #s and progress bar to l10n dash.

A bunch of ugly js that fills in the up to date numbers and progress bar for UI strings on the l10n dashboard.

<img src="http://f.cl.ly/items/3R3y1K120S2l1V111W18/Screen%20Shot%202014-03-13%20at%202.42.31%20PM.png" />

r?