add entity for managing regId
add new messages to send in push
manage registration of the student's device associated to the gds
clean code, chatMessage repository
reg_id various fix
gcm broadcast chat service (test)
fix (test)
get messages of a gds, fix
fix multiple messages, add field id
fix
fix gds_id on chatmessage
add student'name on message gcm sended
fix check
fix date agenda
manage adid missed
fix error add comment
fix get comment
mapping id
gcm key smartcampus, fix
text message moved from url to body, add filter for encoding
properties