Initialize a logger
Logging configuration file
Add logging information when posting to facebook
Refactoring some code for posting to Facebook
Add more logging to the admin module
Add a bit more margin to top and bottom of logo
Remove 'read more' link from the excerpt of the story and put it in place of link to the category of the story
Add a custom filter for the logging module
Add file handler for all logging levels and apply a filter for each
Update the logging for the image deletion thread so that logging only takes place when there is need to delete images
Add logging to the rest of the helper module
Use the exception function for logging an exception instead of error
Merge branch 'feature/logging' into develop

Conflicts:
	app/admin/routes.py
Increase the delay in the image deletion thread to 1800 seconds
Merge branch 'release/v0.8.15'