+ PAS integration fixes
+ added appropriate icons
Merge branch 'release/1.4' of github.com:openeyes/OphLeIntravitrealinjection into release/1.4
+ fix to how patients are referenced when pulled from PAS
+ [OE-3246] now stores legacy data for patients not yet in openeyes, and uses signal handling to populate data when patient pulled in from PAS.
+ [OE-3242] sets the event info for legacy events.
+ bug fix for config (case sensitivity)
+ bring legacy migration forward for testing convenience
+ added argument to import function to output a limited number of hos nums for patients that had injections imported, but aren't yet loaded in the db.
+ default settings for missing firms
+ mapping to appropriate subspecialties on firms
+ bugfix
+ bugfix - handle archive processing of patients with multiple episodes
+ [OE-3269] link to legacy data application
+ force event modified date to match created date if not provided in import data
+ ensure that we pull archived events in date order so created event date is accurate
+ code cleanup
+ default user id set up for import
+ placeholder for legacy link in config.
+ release documents