Changes since 1.2.0
1. Made some fixes to the apertium functions.

Changes since 1.1.8
1. Renamed check_orto () function to po_lint ()
2. Added check for differing translations for identical msgids to po_lint ()
3. Added check for identical, adjacent words to po_lint ()
4. Improved some checks in po_lint ()
5. Added a translator's comment with a "[po-lint]" tag to every entry that did
   not pass one or more of the checks in po_lint (), with an explanation of
   the error. Comment will be removed upon unfuzzying the entry.
6. Updated the look up function for translations on the Microsoft Language
   Portal, so it hopefully works until the next time when Microsoft changes
   something ...
7. Added explanatory comments to several functions, explaining what they do.
