Originally observed that "successful" was misspelled "succesfull" on the build view page. While correcting that, a number of other spelling errors were also corrected.
* Accepts options for PID and log file.
* Uses posix_kill whenever available.
* Checks that the daemon actually started or stopped.
* Try to terminate then kill the daemon.
* Uses the logger or output instead of "echo".
Added a ProcessControl interface and implementations.
Closed#908