Allow translated target equals to the source

[ysavourel]

When the target is equal to the source, it does currently not get passed to OmegaT as translation. This is because that can be a simple copy of the source.

We need to add a check on approved and/or the state value to allow legit translations to be passed through.

[ysavourel]

Changed src=trg behavior, so if approved or state implies the trg is not just a copy it is passed to OmegaT as a translation. This resolves issue #8. Also: changed the version.

→ <<cset 4b80c8ee06dc>>