new page about mentors, Piotr Betkier added as mentor
Piotr Jasiun added as mentor
werbetowski avatar moved to separate dir for organizers
piotr betkier homepage
angular lib renamed
minor 'refuctoring'
szukajka mentorow
Rafal Krzewski bio
now mentors on index.html are listed from json
don't show images if they're not available
sort mentors by name
images clean up
minor refuctoring
orderBy fixed