Originally observed that "successful" was misspelled "succesfull" on the build view page. While correcting that, a number of other spelling errors were also corrected.
Added an AnsiConverter helper.
Use the AnsiConverter in the email and page templates that display the build log.
Use a dedicated stylesheet for the ANSI converter.
It can be customized.
It can be inlined in the notifications.
Do not use ProphecyTestCase when not needed.