Quote escaping to check in TMX -> PO tikal conversion

[Former user]

Original [issue 113](https://code.google.com/p/okapi/issues/detail?id=113) created by @ysavourel on 2009-10-03T15:45:30.000Z:

Un-escaped quotes in TMX may get passed un-escaped to PO output in the - 2po command of Tikal.

[Former user]

Comment [1.](https://code.google.com/p/okapi/issues/detail?id=113#c1) originally posted by @ysavourel on 2010-02-11T13:25:41.000Z:

Seems to be fixed now: " get escaped to
"