chaged $experiments index to string
Moved validation filters into the controller, and added the getErrorRedirect and areCredentialsValid functions.
Created the validation filters and implemented the get and post request handlers.
Added error messages for the "Add Session" validation rules.
Added validation rules and message handling for the "Add Session" form.
Added getExperimentIDFromURI

This logic was removed from the route filters and placed here for reuse.
Created getTreatmentFromURI

This logic block was moved from the route filters into the Treatment
class for reuse.
Added model accessors and mutators.
Added controller get and post request handling.
Removed function getTreatmentTagData, as treatment tags are longer used.
Moved several route filters into their respective classes for improved code reuse.
Added the session Email Message field to the "Add A Session" form.
Added CSS to further space out expeirment tables.
Added styling for the WYSIWYG in the "Add A Session" form.
Created the Calendar controller, which handles the calendar js requests.
Created the Date model.
Created the FullCalendar model.
Created the Time model.
Created the Timestamp model.