* Adding signs to variants and adjusting HasPendingChangesSignProvider.cs
* HasPendingChangesSignProvider.cs now populates variants & refactoring to move logic to DocumentPresentationFactory.cs
* Working HasScheduleSignProvider.cs to provide variant signs
* Refactoring ISignProvider.cs to take an IEnumerable again
* Moving code from controllers to factories
* Refactoring HasPendingChangesSignProvider.cs to use the right Interface method
* Refactoring HasScheduleSignProvider.cs to be less bloated, and more readable (hopefully)
* Refactoring tests to look at variants and include a list
* Changing instantiation to be better
* Fixed minor logic issue in HasScheduleSignProvider.cs
* Refactoring to include just 1 database call.
* Adjusting tests to use the new methods.
* Reverted breaking changes
d51561b202