Change text in New Proposal snackbar

[gingervik]

Please, remove id and change the text to “Your proposal was created!”
Discussed with @Taikaish

[yanivi71]

Tested on Staging iOS version 1.9.7 (6591)
Tested on Staging Android version 1.9.7 (6591-240)
Found OK
text to “Your proposal was created!” is appears instead on the old message

[yanivi71]

Tested on production
Found OK
text to “Your proposal was created!” is appears instead on the old message