GPII-609: Removed inclusion of io.json config file. Readded os_common.json, as the removal of it resulted in the test gpii/node_modules/matchMaker/test/ProxyTests.js failing. With that file, a .txt equivalent has been added, describing the desire to move it from the preferences folder
Merge remote-tracking branch 'kaspermarkus/GPII-609'

* kaspermarkus/GPII-609:
  GPII-609: Removed inclusion of io.json config file. Readded os_common.json, as the removal of it resulted in the test gpii/node_modules/matchMaker/test/ProxyTests.js failing. With that file, a .txt equivalent has been added, describing the desire to move it from the preferences folder