Bug Fixes for Modify Form, Repeat Form, and Remove/Modify Gridview 

- Made it so the repeat form resets after you add an exercise or routine, so you can add multiple routines and exercises while being on the same page without the form bugging out
- Made the modify panel hide after you change dates in the remove form, either by the drop down list or the date picker. 
- Made the Gridview have they scheduled items sorted by start time