Merge pull request #2629 from Chive/docs/nested-plugins

write a nested plugin section
[docs] Added clarification for cms pages under apphooks, closes #2077
thanks to @yakky
Merge branch 'develop' into docs/cleanup
Merge pull request #2077 from Chive/docs/apphooks

Clarify Apphook urlconf attach mechanism
Merge pull request #2750 from digi604/fix-2744

fix #2744
[docs] added file permissions section
Merge pull request #2043 from Chive/docs/file-permissions-plugins

Document #1772
Merge pull request #2748 from Chive/docs/cleanup

Docs Cleanup
p3k exception handling
Convert page_url to an AsTag

Signed-off-by: Martin Koistinen <mkoistinen@gmail.com>
[docs] explains `with` tag usage in templates
Merge pull request #1027 from Chive/docs/plugin-context

[Docs] plugin reference should cover provided contexts.
fixes #2732
Switched to version from https://github.com/okfn/foundation, also added a test.

Signed-off-by: Martin Koistinen <mkoistinen@gmail.com>
better url resolver
Update documentation for page_url accordingly.

Signed-off-by: Martin Koistinen <mkoistinen@gmail.com>
fallback on match with $
More accurate documentation

Signed-off-by: Martin Koistinen <mkoistinen@gmail.com>
fix tests
backwards compapatible mixin classes