Change to use more generic CSS classes
initial skeleton of pcp login
better structure in forms
merge with master
fix ids in stylesheet
Use GUIDs as participant IDs

Connection errors are experienced when stale patient IDs have
outstanding connections and are duplicated. Using a GUID avoids
this---patients can be deleted from the db or added from any machine
without error.
update database script to represent new GUID usage. Removed all 'GO's from db script
move database script