Merge pull request #7136
fa19a58 HelpMessage: Don't hide -mintxfee behind showDebug (MarcoFalke)
faffc17 rpcwallet: Clarify what settxfee does (MarcoFalke)
9999cb0 Fix url in .travis.yml (MarcoFalke)
fa22a10 contrib: Del. gitian downloader config and update gitian README (MarcoFalke)
fad3035 [doc] Minor markdown fixes (MarcoFalke)