CORE-1848:
* Removed contextual help from file info type
CORE-4640, CORE-1848, CORE-4015:
* Added pointer style to ensure that all app editor content panel
headers have a pointer
* Ensured that the selection style for ArgumentEditors and
ArgumentGroupEditors is applied on selection after an adjacent editor is
deleted.
* Added length validators to analysis name and description fields, as
well as app name (property editor) and description
* Removed auick tip timeouts for contextual help
* Added separate empty text in app form for editing and non-editing
mode.