Removed unnecessary nesting of containers
Non func update
OK button on file select dialog is disabled when the selection is empty.
Incomplete - task : Implement multi-file selector 
Merge remote-tracking branch 'origin/gxt3-sandbox' into strootman-dev

Conflicts:
	src/main/java/org/iplantc/core/uidiskresource/client/presenters/DiskResourcePresenterImpl.java
	src/main/java/org/iplantc/core/uidiskresource/client/views/DiskResourceView.java
Corrected test failures
Merge remote-tracking branch 'origin/gxt3-sandbox' into strootman-dev

Conflicts:
	src/main/java/org/iplantc/core/uidiskresource/client/views/DiskResourceView.ui.xml
Minor changes to Disk resource view