Update delegation to work with linear decay based staking

[ondrejsojka]

Currently, delegation doesn't work with staking at all. It needs to be redone to work with the new linear decay based staking (#113).

When counting adjusted voting power, votes from people who delegated to the voter should be counted too.

The adjusted voting power (including delegated votes) should be counted in such a way to not depend on the total number of people who delegated to the voter. (O(1) not O(n))

You should also have decreased voting power if you delegated your voting power.

Double-counting votes when undelegating should not be possible. (Once, the person you delegated to votes, then you undelegate, then you vote – the second vote should fail and vice versa.)

[EjembiEmmanuel]

@tensojka can I work on this?

[djeck1432]

@tensojka I would like to work on this issue

[onlydustapp]

Hey @djeck1432!
Thanks for showing interest.
We've created an application for you to contribute to Konoha.
Go check it out on OnlyDust!

[ondrejsojka]

Assigned to @djeck1432 who requested this issue earlier, sorry @EjembiEmmanuel .