ref #4: hotfix for Bugzilla 880922

- PlacesUtils.history.getCharsetForURI() -> PlacesUtils.getCharsetForURI()
- bump title ver to 5.1.0D
- bump Version, FF maxVersion
- initial tests successful
ref #4: xpi pkg for FF34 Bugzilla# 880922
Merge branch 'hotfix/5.1.0D'
Merge tag 'v5.1.0D' into develop

syncplaces-5.1.0D.xpi