Employer Dashboard updates MJ-423

All tests passed.

Also fixes the following tickets:
MJ-424 - fixed url in activity section
MJ-427 - lose date range fix
MJ-428 - today button fix
MJ-429 - added primary btn class to view activity button
MJ-430 - added no candidate activity message
MJ-431 - moved microsite list to right column, also made it fixed