added sponsoring page
added sponsoring image
added email notification for newly created barcamps
added sponsorship email functionality and info message to user
fixed spoonsoring
styling fixed
translations
replaced OSM with leaflet
more translations and moved create button into listing
added "meine barcamps" area
if date is not send we replace it with "TBA"
fixed my barcamps listing
Merge branch 'youthpart-sponsor'