converted back to ruby-style db schema since we're no longer using the fulltext index
fixed report edit link (closes #786)
fixed mission assignment on login (closes #769)
improved 'no mission selected' screen
fixed links in notifier
fixed condition form for no case where no refable qings
updated install instructions
removed old fulltext migration as it's no longer needed
removed option levels from schema (shouldn't be there yet)
Merge branch '4.2' with 4.2.2 hotfixes