only add the pm instance once - and at the end
Add strong-build dependency

Without this there is an implicit depenency on strongloop, which would
be a recursive dependency.

This allows strong-arc to be installed and used directly instead of
requiring it to be run as 'slc arc', which will be the case if it
it installed globally and run with 'strong-arc'.
pm: use process.execPath

Make strong-arc more resilient to node not being on the PATH, which is
possible if strong-arc is invoked by full path.
Merge pull request #764 from strongloop/fix/751-default-to-last-pm-host

only add the internal pm host instance once - and at the end
Add start-stop and circle icons to font icons

- swap out app controller icon for stop-start icon
add assets to project

- icons and font file
fix spacing in global navbar icons
fix spacing in global navbar icons