management command creating process conf files per signals
models.py modified per import changes
saving create conf changes
 filterstream rename file changes
filter file rename updated for only save option
 saving changes
Removed 'id' from file naming (e.g. twitter-filter-id4 should be twitter-filter-4)
Adjusted expected file naming convention to match changes from #130.  Fixes #132.
changes for tickets t130, t133, t135
pep8 changes for model and utils file
Merge branch 't130-generate-process-conf' of github.com:gwu-libraries/social-feed-manager into t130-generate-process-conf
Created supervisor-sfm-conf directory, moved streamsample.conf to it; updated README.  Fixes #149.
Added logic to chmod +x on newly created conf files.  Also added file.close().  Supports #149.
Moved streamsample.conf to streamsample.conf.template to ensure that streamsample.conf is deliberately copied and edited before being picked up by supervisor.  Updated README accordingly.
 fixed createconf & cleaned up filterstream
Merge branch 't130-generate-process-conf' of github.com:gwu-libraries/social-feed-manager into t130-generate-process-conf

Conflicts:
	sfm/ui/management/commands/createconf.py
Eliminated FILEPATH (obselete) and clarified comments around the other supervisord-related settings
added sfm- prefix to streamsample log file names
Updated file_path in delete_conf_file to reflect new location for conf files in /supervisor-sfm-conf and new settings variable SFM_LOCATION
Rewrote TwitterFilter clean() validation logic (and wording): no validation if is_active==False; else: check for username conflicts with 1) TWITTER_DEFAULT_USERNAME (used for streamsample) and 2) any other active filters. Fixes #130 first requirement bullet.