Add "/branch/list" end point to DB4S for retrieving database branch info
Add "/branch/list" end point to DB4S for retrieving database branch info

  $ curl -kE ~/my.cert.pem -D headers.out -G -d "username=test1" \
      -d "folder=/" -d "dbname=a.db" https://db4s-beta.dbhub.io:5550/branch/list
  {
    "branch1": {
      "commit": "c22d60fe2390a74006d3478c999855797f33c846ded801d8232c16ff9e224551",
      "commit_count": 2,
      "description": ""
    },
    "master": {
      "commit": "b3ad3196267241a06860461f8e5356626373d7e9ae68f15fb022d88015a018fa",
      "commit_count": 33,
      "description": "### Production branch\n\nOur latest running server data"
    },
    "somebranch": {
      "commit": "779498afa093d7d101e95b3bcb24dbc6d1966074056c27b45602ce65029e9fc6",
      "commit_count": 8,
      "description": "### Development branch\n\nTest stuff, pls ignore"
    }
  }

sqlitebrowser/dbhub-application,sqlitebrowser/dbhub-application,sqlitebrowser/dbhub.io,sqlitebrowser/dbhub.io