Refactoring: better code readability
Pruning: remove /hdc/transactions/last
Pruning: remove /hdc/transactions/all
Pruning: /hdc/transactions/keys
Pruning: remove /hdc/transactions/sender/[FPR]/last
Pruning: remove /hdc/transactions/sender/[FPR]/issuance
Pruning: remove /hdc/transactions/sender/[FPR]/issuance/dividend
Pruning: remove /hdc/transactions/sender/[FPR]/issuance/fusion
Pruning: remove /hdc/transactions/sender/[FPR]/issuance/division
Pruning: remove /hdc/transactions/sender/[FPR]/transfert
Pruning: changed /hdc/transactions/view/:transaction_id into sender/view
Pruning: adding unimplemented /hdc/coins/[FPR]/last
Pruning: remove /hdc/transactions/sender/[FPR]/issuance/dividend/[AM_NUM]

Also fix ISSUANCE tx with multiple
Pruning: remove /hdc/transactions/sender/[FPR]/issuance/last
Pruning: adding empty methods + adding parameter for last N transactions of sender
Pruning: remove /hdc/amendments/current
Pruning: remove /hdc/amendments/current/votes
Pruning: remove /hdc/amendments/votes/[amendment_id] (redundant)
Pruning: moving /ucg/peering/peer to existing /ucg/peering
Pruning: remove /ucg/peering/keys