Add haptics for merge results

[BasThomas]

We should indicate a successful or unsuccessful merge with a haptic, I feel.

Bug Report Dump (Auto-generated)

Version 1.27.1 (1546622353)
Device: iPhone X (iOS 12.1.4)
TestFlight: true

[akarataev]

I'll take a look at this, if nobody is against.

[Huddie]

@akarataev still on this?

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[akarataev]

@Huddie, yep.
Do you have any suggestions?

[akarataev]

@BasThomas hello,

Please see #2690 how you will have the opportunity.

[natharateh]

Should this issue be closed now that #2690 is in master?

[BasThomas]

Yep, nice catch!

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