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
added custom spinbox for selecting RAM values
use custom spinbox
changed labels text
Merge pull request #6 from planctechnologies/gns-11-20

Code for Gns-11, GNS-12, GNS-13, GNS-20