Major site styling changes
css changes to patient index page
patients form drop down now indicates whether a patient has been referred to the practice or not
Added exception catching to referral dashboard, tests now passing again. Removed unused helper specs
catching up to master
modified appointment form. Can now select from current patients and referred patients. Controller had to switched so a new practicemembership record would be created if needed
Merging all work done on patients the past 3 commits.

Merge branch 'patients'
Graphs now working properly, sent referrals now only tallied if they come from a certain practice, not graphing all referrals regardless
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