Added Search To Newsletter
Fix for file-input directive bug.
Minor style changes for newsletter.
Remove ngGrid

NgGrid had too much markup with complicated templating, so I removed it
for now and replaced with a table based approach.
Minor Style Changes For Newsletter

I made some higher contrast images and changed the color for the sort
indicators to have more contrast for better readability.
Removed Search Image

Replaced search image with glyphicon.
Search Box Forced Focus

Added input helper directives to force focus when an attribute is true
and to call a function when the input loses focus.  These are reusable
components that you can wire up to scope.
Merge remote-tracking branch 'origin/srm_newsletter_page' into develop