Added five new observation parameters
Explicitly set numZoomLevels for the map and each layer.
Notify user via popup when an observation has been saved.
Created Django views that return unique river, site and usernames
Added combo boxes of unique river, site and user names to filter form
Merge branch 'feature/filterform_autocomplete' into develop
Made site indicator circle easier to select and adjusted selection instructions
Enhanced visibility of 'Add observation' button in info window
Created icons for Site Data Display & Graphing component
Created a view that returns all observations for a site.
Update copyright date #17
Add fix for common error.
Update requirements.txt module's version only.
Update template settings file. It was caused problem in my setup.
Created Site Details and Observations tabs
Fix #26.
Merge pull request #2 from ismailsunni/ismail_fixes

Ismail fixes
Added graph tab.
Fix #20
Completed site observation graphing function