intermediate LS encoding corrections

[lcerrato]

A user sent in a bunch of corrections to the Middle Liddell. 1999.04.0058

Most have to do with numerical encoding, so they would be best dealt with when Unicode conversion has taken place

See also
https://github.com/blinskey/greek-reference-database-creator/blob/master/xml/Perseus_text_1999.04.0058.xml

[lcerrato]

perhaps merge when LS is on GitHub?