Changed numerical fields to spinners. Corrected Splittable to double converter.
CORE-4073: Ongoing changes
* Updated the default names for new groups and arguments
* Re-ordered property panel, and implemented some dymanic form
behaviour. Essentially, certain form selections change the state of the
form (required user input, etc)
CORE-4073: Added the MultiFileOutput argument type.
CORE-4073: The App property editor is now displayed on appEditor startup
CORE-4073: Ongoing updates	
When deleting Argument groups or Arguments, the WYSIWYG will attempt to
select the previous valid argument group or argument. If there are none
remaining, then the property panel will be cleared.
CORE-4073: Integrated file info argument propery field
CORE-4073: Integrated data source argument propery field
CORE-4073: Environment variables are excluded from command line preview
CORE-4073: App header bar now dynamically changes based on tool
selection
CORE-4116: HLS now restores with the selections of its prev launch
CORE-4073: Ongoing changes
* Made several tweaks to property panels per team peer review
* Added reference genome controls, but the default selector for the
controls needs to be implemented in the property editor. 
* Additionally, the cmd line output for the selected reference genome
items needs to be updated.
CORE-4415: Corrected faulty regex
* Added Name validator and non-blank validator to Analysis Name portion
of LaunchAnalysisWidget.
core-4428 implement remember last path
Merge branch 'master' of github.com:iPlantCollaborativeOpenSource/ui-apps-widgets-module
core-4428 fix folder selection
CORE-4121: Implemented UI ability to only edit labels
The logic to actually determine if the app should be in this 'mode' has
not yet been implemented
CORE-4121: Added updateAppLabels endpoint
Also added name validator to text-based arguments
CORE-4079 Added DiskResourceSelector addValidator method.

Added an AppWizardDiskResourceSelector::addValidator method so that Validators can be added to its TextField.
CORE-4529:
CORE-4080 Added output folder path validation.

Added an AnalysisOutputValidator that returns an error message if the folder's path contains a space.
Added this validator to the output folder selector in LaunchAnalysisWidget.
Updated LaunchAnalysisWidget::onFolderChanged to auto-validate the folder's path when the user selects a new value.