Datatables actions should use Glyphicons instead of text

[henryluengas]

RNIN-292

Sub-tasks:
#273

[henryluengas]

Replaced all text with icons didn't work on subtask yet. Also reassigned task to me
@sudo-smith

[fedorareis]

@sudo-smith Is this done? If everything is done except the sub-task, then I'd say we can close this since the sub-task is a seperate issue.