Merge pull request #32 from planctechnologies/master

Cloud provider and cloud region preferences
Fixes bug that prevented changing any IOU device setting when connected
to another node.
added instance related settings
validate terms acceptance
added gui interaction tests
changed name to ui controls

Conflicts:
	gns3/ui/cloud_preferences_page.ui
	gns3/ui/cloud_preferences_page_ui.py
save/restore new settings
added tests
terms and conditions link
gui controls for instance timeout
instance timeout settings
load/store timeout settings
added tests
test settings are erased when users ask for
GNS-12 store/erase cloud settings depending on users choice
Fixes bug where IOS nvram/disk files were not kept after closing a
topology.
Change name of default base startup and private configs
Fixes #31.
Check is current working directory exists.
Disabling Rackspace tests while not scalable