Fix interface log file location

Put in \High Fidelity\Interface\Logs rather than \interface\Logs.
fixing models not rendering sometimes
Merge branch 'master' of https://github.com/worklist/hifi into modelserver
cleanup debug
Merge pull request #2857 from ctrlaltdavid/interface_log_dir

Fix interface log file location
Merge pull request #2858 from ZappoMan/modelserver

Fix bug where sometimes models don't render
Merge branch 'master' of https://github.com/highfidelity/hifi