Update Device & Note dependency.

Updating devices to be independent from notes. (Notes stay for User
History purposes)
Require CSV and write import_all controller & add :grade_level to strong params.
Add belongs to association for notes to user.
Added additional validations, GRADE_LEVEL constant for form purposes and the entire importal_all function.

This import_all function expects you to have 100% of the student info
AND their current ipad entered on one line. Only works with CSV files
for now...
Update has_many association to notes.
Changing default device output to a render
General formating.

HTML formatting and moving default student output to a partial.
HTML Updates Title and removal of unnecessary links
Removing redundant code, replace with partials.
Additional entry for grade level in new student form
HTML changes for sanity...
Requiring CSV for importing actions
Route changes to accomidate import_all and addition of admin resources
Adding grade level and an active boolean for inactive students.
Adding user reference to notes model
Schema changes….
Generated files.
Basical additions and index action
Form for importing CSV files.
Partial for displaying Device info in a uniform way.