* feat(weights): use our benchmarks for pallet proxy

* feat(weights): use our benchmarks for pallet multisig

* fix(benchmarks): some pallets benchmarking need access to system.remark

* feat(weights): use our benchmarks for pallet timestamp

* feat(weights): use our benchmarks for pallet scheduler

* fix(weights): impl proper weights & benchmarks for pallet upgrade origin

* doc(dev):weights-bench: reference machine should use an SSD with USB3

* style(clippy): allow unnecessary_cast for WeighInfo implementations

* doc(dev): add "how to benchmarks weights of a Call/Hook/Pallet"

* feat(runtimes): use our benchmarks for pallet universal dividend

* feat(pallet_ud): add weights info

* feat(pallet_ud): add benchmarking

* fix(weights): use our own extrinsic base weights constant

* feat(weights): use our benchmarks for frame_system

* feat(weights): use our benchmarks for pallet balance

* fix(accounts): providers should be inc as soon as the account recv money

providers should be incremented as soon as the account receive funds

* fix(gdev): fix runtime benchmarks compilation

* fix(smith-wot): smith certs expiration should revoke smith membership

* remove useless error `OwnerAccountNotExist`

Since commit 012d096f,  IdentityIndexOf it's correctly pruned. Before this commit, we found the associated author, even for a removed identity, it still failed when we tried to modify the identity, but then the error returned was not the right one.

pending mb expiration should be applied only if pending mb exist
Fix #51

Closes #39