CORE-4646 Added editPublicAppWarning and editPublicAppHelp.

Replaced obsolete emptyToolText with editPublicAppWarning.
core-4604 add success message for metadata update
Changed Create Apps window title to Create App CORE-4650
core-4696 add edit Apps
CORE-4673: Externalized some strings
Imported invalidUrl messages from ui-commons-module.
Renamed I18N#RULES to VALIDATION.
Merge branch 'master' of github.com:iPlantCollaborativeOpenSource/ui-resources-module
Minor doc update for IplantDisplayStrings#editApp.
Added AppsWidgetsPropertyPanelLabels#detailsPanelHeaderDefaultText.
Renamed detailsPanelHeaderDefaultText.

Renamed detailsPanelHeaderDefaultText to detailsPanelDefaultText, since this text is meant for the content of this panel now.
CORE-4661: Change mulit-file output default label
CORE-4663: Added context help message for info widget prop panel.
update user menu icon
core-4674 new forums icon
CORE-4686 Added Ask step
CORE-4692
CORE-4663: Contextual help correction
core-4690 add new feedback button
core -4703 updated documentaiton link to user manual