added cloud inspector widget
added cloud inspector promoted widget
added cloud inspector to dock view menu
added a table view
select rows not cells
load cloud inspector at startup (temporary hack)
load fake nodes to test the gui
fixed path for promoted widget
instance status incons and tests
method to update instances status
added instance polling
context menu on cloud inspector
better table column resizing
rearranged cloud inspector columns
more compact layout for cloud inspector
Merge pull request #11 from planctechnologies/cloud_inspector

Cloud inspector
Merge branch 'dev'

Conflicts:
	gns3/main_window.py
	gns3/ui/main_window_ui.py