add option to use django-request for detailed logging of all requests

[megies]

This adds a ways of adding additional apps and middleware through local_settings.py, also being able to control position of additional middleware in the chain.

django-request is commented by default, so deactivated but can be switched on in local_settings.py.

Tested it locally, works when activated before initial jane setup (before intial migrations).

Closes #41

[krischer]

This seems fairly complicated especially as it pushes quite some logic to the settings.py but I also don't see another obvious option of how to do this. Maybe have settings.py call a callback function from local_settings.py with all locals() variables that the local_settings.py could then modify as it sees fit?

@barsch Any opinions/advice how this is usually handled with django?

Otherwise I'd be fine with this.

[barsch]

never needed that in my projects - maybe this helps:

http://www.robgolding.com/blog/2010/05/03/extending-settings-variables-with-local_settings-py-in-django/

[megies]

Different approach, not sure if it's less ugly. I don't care which way.

[codecov-io]

Codecov Report

Merging #44 into master will decrease coverage by 0.26%.
The diff coverage is 20%.

@@            Coverage Diff             @@
##           master      #44      +/-   ##
==========================================
- Coverage   85.65%   85.38%   -0.27%     
==========================================
  Files          56       56              
  Lines        3652     3667      +15     
==========================================
+ Hits         3128     3131       +3     
- Misses        524      536      +12

Impacted Files	Coverage Δ
src/jane/settings.py	72.28% <20%> (-11.54%)	⬇️

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 4178fd3...401b366. Read the comment docs.

[megies]

So, any objections to merging this @krischer?

[krischer]

I kind of like the solution in the second comment of @barch s link: In local_settings.py do:

def get_setting(setting):
    import settings
    return getattr(settings, setting)

INSTALLED_APPS = get_setting('INSTALLED_APPS') + ('debug_toolbar', )
MIDDLEWARE_CLASSES = get_setting('MIDDLEWARE_CLASSES') + ('debug_toolbar.middleware.DebugToolbarMiddleware',)
INTERNAL_IPS = ('127.0.0.1',)

This would remove any complexity in the default settings.py and push it completely to the user. Also the local_settings.py with your solution has to contain two additional variables.

I'm not fully convinced this approach does not result in circular imports but if it works as advertised it might be a nice alternative.