Remove toasts in favor of Snackbars

[iamareebjamal]

Toasts are kind of deprecated as any user who has disabled notifications for an app won't be able to see toast as well

Change toasts to snackbars wherever used

[GOVINDDIXIT]

I want to take this issue

[iamareebjamal]

Go ahead

[liveHarshit]

@GOVINDDIXIT After login, snack for Welcome back! is shown in the login fragment. But the fragment is instantly pop out. Snack after auth should be shown in redirected fragment.

[GOVINDDIXIT]

@liveHarshit thanks for pointing. Since, there is no post handler now. Thus it should be showed on redirected fragment, will fix it

[liveHarshit]

@GOVINDDIXIT SnackBar is displaying at the top.

[GOVINDDIXIT]

Created PR #918 for above issue