[ABW]: patterns corrected for condenser/follow/tags_api:

- rebranding
- accepted different future cashout_time (prior to HF17 it was taken from root and we don't want to introduce hardfork differences to HiveMind)
- accepted different post_id
- accepted lack of double-escaped slashes in json_metadata (now is better)
- corrected indent for tavern's 2 spaces
- corrected cases of CLRF
Comparison script now removes .diff.json and .out.json files from previous run
Comparison script now generates .out.json with error message in case of error/no response (all failing tests have .out.json file)
Added comments to failing tests why they are failing
Added comments to tests with empty results why there is no other option