CORE-4519: Externalized some strings.
CORE-3978 Metadata help (also alphabetized)
core-4495 add tree collapse button
Merge branch 'master' of github.com:iPlantCollaborativeOpenSource/ui-resources-module
CORE-3978 add contextual help to metadata dialog
core-4426 update error message
CORE-4526: Adding new app integration palette icons
Added I18N strings for app launch.
Merge branch 'master' into STABLE