Adding OnClickListener for Bios

NOT TESTED! Code copied from articles, should work, but might have
forgot something, who knows.
Adding BioDetails.java and associated layout/biodetails.xml
I don't even remember

I  remember the next thing I want to do is work on article content
formatting.
I don't remember, I know I wanted to work on article content formatting but didn't get that far. I need to stop drinking and programming...
Cleaning up some code and layout changes.
Merge remote-tracking branch 'origin/master' into dev