errors that happen during ensure_sanity are output to the screen and
look a lot better

likely some stuff still doesn't work properly...

accordingly

the time being, by rolling back transactions automatically if there is one
and it has failed.

has a bit more overhead now but they're handled much nicer. Exception
and MaharaException should now NEVER be thrown directly

useful for (for example) exceptions thrown on param_* with no default

errors properly

smarty where available.

  * Re-organised the file a bit, to better logically group some stuff
  * Renamed the log_dbg function to log_debug
  * Added a third parameter to the logging functions to say whether a
    backtrace is required.
  * Fixed up projectname in default exception handler.