upload avatar
conversation and unread messages
Update database.yml
complete messaging system
Merge branch 'messagin_tool' of github.com:worldintime/IceBreakerTest into messagin_tool
switch to postgresql DB; update test data
return db user pwd
Merge pull request #1 from worldintime/switch_to_pg

switch to postgresql DB; update test data
synchronized with mobile
merged with master
syntax alignment
merge messaging tool