Merge pull request #2200 from ten24/develop-4_r10backendfixes

Removed duplicate methods
Bugfixes and fixes to editing event schedule and sku bundle process has
been tweaked to populate event specific fields
Adding bidirectional helper methods and hb_populateEnabled to specific
properties
Spelling fix and missing RBkey
Merge branch 'develop-4' of https://github.com/ten24/Slatwall.git into develop-4_r10backendfixes