Comment 14 for bug 1635386

Alright, this should cover what was discussed on the task and the comments. Branch has been updated(Here to avoid scrolling through the comments: http://git.evergreen-ils.org/?p=working/Evergreen.git;a=shortlog;h=refs/heads/user/khuckins/lp1635386-visual-cues-for-bills-item-status) and rebased to the latest master. I've attached an image as an example of the latest update.

Changes since the last update:

- rowclass parameter has been changed to cellclass, for consistency with how it's utilized.
- statusicon parameter has been added to eg-grid, containing an object with a function and a boolean. The boolean determines if a new column, "Status Icon," should display, and the function puts out a small template for glyphicons to display.
-statusicon has been implemented for the patron bills list, and will display a relevant glyphicon for each mentioned status.