Add two new entries in the settings to choose different morphology dictionaries

[LAfricain]

Currently the only morph dic we can use is Parkard and Robinson in English. I translated this two dic in French, and it would be nice to have this features in the settings, as it is already possible to chose a different strong dic. This option is already in Bibletime.

[LAfricain]

@nwalkewicz do you think this issue is in your skill? I don't think it's too much work, but it's a pretty useful option.

[nwalkewicz]

I don't know yet (still pretty new to the codebase, C, and GTK), but I'd love to give it a shot! I'll write here again (with a mention) after the weekend when I have some more time to look into it.

[nwalkewicz]

@LAfricain Unfortunately I think this one is beyond me, for now at least; I've actually had trouble getting dictionaries to work at all in Xiphos.

[LAfricain]

I even wonder if it wouldn't be useful to have an entry for the NT and one for the OT. As, it seems, there are two different dictionaries.
The real problem here is that without this entry it's impossible to choose a dictionary other than English. Which still limits the possibilities. I've produced a French version of Robinson, and for the time being it's not usable under Xiphos, except with some tweak like renaming it in the conf.