wip - schema update builder improvement
AI-594 Updated DesignTest
Merge branch 'release' into version4
Fixed foreign key constraint fails on site for location
Merge remote-tracking branch 'origin/version4' into version4
Fixed foreign key constraint fails on site for location
Merge remote-tracking branch 'origin/version4' into version4
AI-499 : switched to FlowPanel, emulated click event to trigger FocusPanel on click handler.
Revert "wip - schema update builder improvement"

This reverts commit 9442e2bad035735ea587a6b3013bd8248855b967.
AI-499 : replaced HorizontalPanel and VerticalPanel with bootstrap layout
AI-499 : added drag handle to container
AI-499 : added drag handle widget
AI-499 : removed click event emulation
AI-499 : fixed resizing (removed absolute panel container and use bs layout)
AI-499 : implemented Alex's idea with spacer
AI-499 : fixed issue with min-height (now it's possible to drop widget if panel is empty)
Added enum type for Attributes.

I had wanted to use reference types for Attributes but having
the list as a seperate entity creates all sort of subtle
problems.
Merge branch 'version4' of github.com:bedatadriven/activityinfo into version4

Conflicts:
	server/src/main/java/org/activityinfo/ui/client/component/formdesigner/FormDesigner.less
Updated adapter to handle indicators of text type