[REST] /rest/block response with full tx details

- rest block request returns full unfolded tx details
- /rest/block/notxdetails/<HASH> returns block where transactions are only represented by its hash
[REST] added /rest/block/notxdetails/<hash> into REST-interface.md documentation
[REST] JSON output: remove block infos from tx details if it is nested in block
Merge pull request #5391

932ef50 [REST] JSON output: remove block infos from tx details if it is nested in block (Jonas Schnelli)
cae5486 [REST] added /rest/block/notxdetails/<hash> into REST-interface.md documentation (Jonas Schnelli)
73351c3 [REST] /rest/block response with full tx details (Jonas Schnelli)