Set instrument, mark, and pier, begin times after loading bns data
Added new REALTIME_DATA_URL configuration parameter
Add REALTIME_DATA_URL global variable
Use global REALTIME_DATA_URL to configure realtime factory
non admin users are only given the code name of the observatory they represent
cleaned up code, fixed observatory id
removed file that is no longer used
removed file that is no longer used
removed reference to Observatory and change observatory to use index.php
fixed code and changed mount path
Add sqlite, mysql drop_tables scripts
DatabaseInstaller class, with sqlite and mysql implementations
Updated setup_database script to support recreating schema without dropping, reference load_bns script for data loading
Added current user default_observatory_id to observation navigation link.
Merged conflicts.
Merge pull request #120 from jmfee-usgs/GMP-387

Gmp 387
Merge pull request #119 from jmfee-usgs/set-begin-times

Set instrument, mark, and pier, begin times after loading bns data