registration status of gcm id to backend server is stored in preference
and resend gcm id to server if it is not registered in first attempt.
resolves #210
Merge branch 'master' of https://github.com/ButterFly-Broadcast/butterfly.git
Merge branch 'master' of https://github.com/ButterFly-Broadcast/butterfly.git
Revert "registration status of gcm id to backend server is stored in preference and resend gcm id to server if it is not registered in first attempt. resolves #210"

This reverts commit d5dda2635fbeb7bda4a8fa5d505e6079c685fdb0.