Added drawn message to challenges, workaround for overflow x bug
#203 Added getter for pending challenges
#203 Added create challenges directive
#203 applied style for create challenge buttons
#203 added challenge requests to dataservice
#203 Fixed angular post error
#203 Added working challenge creation
#203 Switched to v2 during login from mobile
#203 tidy up newspushes at presentation mode
#203 added challenge receive