Updating support for RegExpSearchTypeFilter to SearchConceptHelper;
adding code to EnhancedSavedSearch to filter saved text searches by
current ComponentSearchType (Lucene vs RegExp); making
getSearchTypeSelector() static so it can be called globally; adding
support for RegExpSearchTypeFilterto TextSearchTypeModel and
TextSearchTypeView; adding confirmation dialog to ResultsToWorkflow;
adding package private ComponentSearchTypeHelper to for use in
adding/stripping regex '/' characters to/from search strings