Fix Language Code Conflict

[BrutuZ]

• Simplified the Signs&Songs identification/tagging by looking directly for the -ss string suffix instead of trying to split by - and then checking length and if the second element matches ss
• Added a length check to parsePref() since sets from the custom fields don't have the forced element, which raised an exception

Changes tested on 2-3 episodes, intended language selected and no more crashes ( Fixes #9 )

I refrained from formatting the code to keep the diff small and easy to read. Didn't work out all that well for the whole PR given the desync between master and the latest branch (V1.0.3) but at least 861dc783d53668bfdfaf97e2f730166cca541548 ended up small 😄. If allowed I could add another commit to address it as there are a few stray spaces and the likes

[rockrider69]

Thx, and if you have more proposals for code fix and/or improvement, feel free !

[BrutuZ]

I kind of overlooked bumping the version number inside addon.xml or adding to the changelog 😅

[rockrider69]

No problem I saw that, I'll do it. I might include something more before closing the version and pushing to KODI rep. (If time allows before few weeks off coming😄)