Merge branch 'master' of https://github.com/guy-mograbi-at-gigaspaces/cloudify-widget-ui

Conflicts:
	backend/controllers/PoolController.js
Merge branch 'master' of https://github.com/guy-mograbi-at-gigaspaces/cloudify-widget-ui

Conflicts:
	server.js
Merge branch 'master' of https://github.com/guy-mograbi-at-gigaspaces/cloudify-widget-ui

Conflicts:
	server.js
Merge branch 'master' of https://github.com/guy-mograbi-at-gigaspaces/cloudify-widget-ui

Conflicts:
	server.js
fixing pools view
adding pool status by id, fixes in backend
fixing auth failure due pool key missing on tasks
adding create, bootstrap and delete machine
adding polling to refresh server data
extracting pools table to a common directive, fixing bootstrap and delete commands.
prepared routes for pool errors and pool running tasks, added errors view
sorting layout
fixed nodes table refresh
fixed nodes table refresh
catching request errors.