CORE-1848, CORE-4640:
* Removed output source dropdowns from FolderOutput and Multi-file
output property panels
* Removed "Exclude this item if nothing is entered" from
EnvironmentVariable property panel
* Removed "Argument Option" from list Argument types
* Changed "Display this item in the app" to "Do not display this item in
the app" and inverted functional logic of code-behind
* Implemented a success iplant announcer message on successfull launch.
Also added the fail iplant announcer for failed launches, in addition to
the error popup.
* Increased the size of empty "Sections"
* Corrected an issue with auto-expand of "Sections" when drag
re-ordering arguments
* Changed detail panel headers to "Details: <i>{0}</i>"