Fix AdvancedFilterForm Media declaration

[metamatik]

See #60 (comment) for context.

@asfaltboy, this is a quite empirical modification based on this Django documentation page.
It solves our deployment problem on Heroku, and I believe it shouldn't break anything anywhere else.

Feel free to integrate it upstream if you so wish :)

[coveralls]

Coverage decreased (-0.007%) to 96.06% when pulling 997b319 on BureauxLocaux:fix-heroku-deployment into d7acb36 on modlinltd:develop.

[asfaltboy]

@metamatik thank you for the contribution, very appreciated!

Interestingly enough, I see the docs are pretty much the same all the way back to Django 1.5 (assuming we still want to support that legacy Django version). This leaves me wondering whether there was ever any reason we used the static template tag this way...

The only thing I'm wondering about is the change of the js files order. I'm pretty sure jquery_adder.js needs to come before advanced-filters.js, or we'll have some cases where the wrong jQuery will be used, e.g when using Django-Grappelli (see #49 for details). Or, did you experience some sort of issue with the original order?

Besides the above, I don't see any reason not to merge this honestly.

[metamatik]

You are much welcome, thank you for letting the community use your app :)

There is absolutely no valid reason for my reordering of the files other than my "pseudo-OCD", so I will cancel this change ^^

[coveralls]

Coverage decreased (-0.007%) to 96.06% when pulling 78fc51b on BureauxLocaux:fix-heroku-deployment into d7acb36 on modlinltd:develop.

[asfaltboy]

Thank you again, that was quick! I'll merge this and keep it in develop for a while for you and @gone to be able to test it out. I'll slate this for a minor 1.0.7 release, which I hope to package this weekend.