update Gravatar - prevent 404 errors, improved caching, show letters during loading
update Gravatar - prevent 404 errors, improved caching, show letters during loading

aqnouch/rimbo,aqnouch/rimbo,kreativmind/pagekit,nstaeger/pagekit,nstaeger/pagekit,nstaeger/pagekit,malles/pagekit,pagekit/pagekit,malles/pagekit,kreativmind/pagekit,pagekit/pagekit,kreativmind/pagekit,malles/pagekit,aqnouch/rimbo,pagekit/pagekit