Add Layout model as logical representation of a physical layout aspx file.  Needed so that same layout file can have multiple configurations af layout specific blocks
Fix compiler warnings about inherited GoBack methods
Changes to ModalDialog to render Save/Cancel buttons correctly in situation where Save is not a post-back
Convert ButtonDropDown to RockControl
Update HtmlEditor to use RockControl (still need to address MergeFieldPicker)
Update Toggle control to be a IRockControl
Add badge colors back to BS3
Update GroupRolePicker to be RockControl
fix a couple minor missing things on DateRangePicker and DateTimePicker
add modaldialog-save-button css class to ModalDialog save button
developer.css no longer needs special css for schedule-builder now that we are using ModalDialog
big refactor of ScheduleBuilder control.  Now it uses ModalDialog instead of it's own custom modal stuff.  Still needs a little more tweaking to the html for styling, etc
minor tweaks to ScheduleBuilder.cs to swap out some of the dead BS2 css classes.  Ready for Styling review
+ Moved ScheduleBuilder in RockControlGallery under the heading "Other"
+ Added NumberBox to RockControlGallery
fix up populate for table definition change
fix warning in RockControlGallery
Started LocationPicker as a new Picker
minor update RockControlGallery for ScheduleBuilder
Merge branch 'upstream/develop'