Revamp minister parsing

[smcadams86]

A few issues have been surfaced regarding minister name parsing

Parsing from MP3 Metadata

• incorrect name conversion (Art Simon -> Martin Simonson instead of Arthur Simonson) as Martin is closer to Art than Arthur is.

  Falling back to filename

If a mp3 file does not have a minister in the artist tag, an attempt is made to parse the minister out of the filename. Rockford assumes a file name in the format YYYYMMDD_JHaapsaari.mp3. When this happens, the most similar minister is being picked, regardless if the decision is indeterministic. For example a filename of 2014/0629_RSorvala.mp3 could be either from Rodrick Sorvala or Rory Sorvala. In a case like this, the minister should be left blank.

[smcadams86]

@andeyout you may be interested in this issue.