Make job panel property names case-consistent (1049543)

This work fixes Bugzilla bug [1049543](https://bugzilla.mozilla.org/show_bug.cgi?id=1049543).

The formatting of the left-hand side job panel property names and attributes are all now `Upper case`, so they are consistent. I also added @maurodoglio's suggestion to pluralize the duration suffix. I am assuming *similar jobs* requires the same change below.

Tested on Windows:
FF Release **31.0**
Chrome Latest Release **36.0.1985.125 m**

Adding @camd for visibility.