Adding the disable/enable Create button feature on the volume and security group create pages
Add the disable/enable feature on the snapshot create button
Added the disable/enable create button feature on the keypair create/import pages
Added the disable/enable create button feature on the user create page
Added the disable/enable create button feature on the group create page
Added the disable/enable next/create button feature on the instance launch wizard
Added the disable/enable buttons feature on the launch config wizard
Added the disable/enable buttons feature on the create scaling group page
Added the disable/enable button feature on the create scaling group policy page
Removed the Add User button flickering issue
Merge branch 'develop' into GUI-1046

Conflicts:
	eucaconsole/templates/instances/instance_launch.pt
	eucaconsole/templates/launchconfigs/launchconfig_wizard.pt
Adjusted the instance launch wizard's image selection disable/enable button due to the update
Removed unneed h3 headers in the unsaved tag warnging modals
Added the unsaved tag warngin modal to the instance launch wizard
Added the unsaved tag warning modal to the create scaling group wizard
Removed unneed h3 header in the unsaved rule dialog
Removed empty p tags in the create securty group dialog
Added "* Required fields" line on the volume create page
Added the required fields line to the snapshot create page
Adding conditions so that the added lines only appear on the create page, not the detail pages