1.5.0 Update

- Remove redundant code for non-forked starting
- Conditional includes for Python 2.6 support
- Change use of DaemonContext to behave better
- Write a timestamped traceback to /tmp if an exception occurs killing off app using clihelper
- Rename clihelper._get_logging_config to  clihelper.get_logging_config
- Fix a bug where a pidfile is left behind when stopping after running interactively
- Rename logger to LOGGER