"Streamer - game - title" listing, ellipsis option and Polish translations

Hello!

:information_source: These are just proposals so feel free to discuss and decide if those changes should go into the main app.

I was missing couple of options in Twitch.tv XBMC plugin. First was **ability to show up stream title as "Streamer - game - stream title"** template. With followed streamers streaming different games and not always stating that in title I thought that giving users such option would be helpful. Second option is **checkbox option whether user shall see titles truncated to 60 characters with ellipsis in the end** or title should be presented without truncation. XBMC is scrolling titles anyway and - in my opinion - it's better to see full info rather the have title chopped.

I've also prepared **translation for new strings** in languages which I'm aware of and **fixed some missing Polish translations**.

Last thing was *change sorting* followed channels which are offline. I think case insensitive sorting is better. With that I have entries like _dota2_ and _Dota2_something_ right beside each other rather than scrolling after "Z" to see lower-cased titles.

All and all - thanks for the greatest plugin for XBMC! Keep up the good work, guys!

**New options**
![screenshot004](https://cloud.githubusercontent.com/assets/896246/4465766/4e7b5d4e-48de-11e4-8972-51ca83483ee0.png)

**Scrolling title**
![screenshot003](https://cloud.githubusercontent.com/assets/896246/4465764/4e79c1a0-48de-11e4-95f2-344fcf65e466.png)

**Sorting case insensitive**
![screenshot005](https://cloud.githubusercontent.com/assets/896246/4465765/4e7b0146-48de-11e4-92ab-d1e43c40d32f.png)