Blog post and blog listing template

[bartromgens]

I merged the feature/blogpost branch in 3336db28f57bf8553648d8f8cabc94c0b3ec1af1.

All the basics are finished. It only needs polishing, so I decided to merge to get some feedback.

What is new,

• A BlogPage model
• Create/modify blogpages in the admin
• Set the blog category and blog header image in the admin
• Templates for blogpage and postview in JD style
• Mobile templates
• Pagination with number of posts per page setting in the admin
• Demo-data fixture with blogpages, also for departments

TODO:

• [x] Header image for blogpost view (not trivial)
• [x] Unit tests
• [x] Design documentation
• [x] Blogpost snippets (show first n words only)
• [ ] Minor tweaks to the page layout/style after feedback

There are still some small differences with the current jd.nl layout. Not sure how important they are. Feedback is welcome!

[bartromgens]

Changed milestone from 4 to 5 because I think we can go live with the current state. The missing functionality is the last 20% of milestone 5.

[bartromgens]

We (Bas, Pieter, Bart) decided to use the homepage header image for blogpost detail view/pages.

[bartromgens]

Header image for blog post view has been added in commit bd1a250d8a11d28b1ee86086326c7f3f6cfc673a. It will always take the homepage header.

[bartromgens]

Added basic blog design documentation in commit 08fcd9fe3a0870dd2c6512adcd0f10e85fd389cc.

[bartromgens]

Added some basic unit tests for the blog category page in commit d85c97e9babd8805ae37f46bc871bbd74c8958f9

[bartromgens]

Added optional blog post excerpt view on blog category page in commit a1536e6de79119af145671e1778f8dffa5c01e98.

It can be enabled on the BlogCategoryPage admin, under the blog category combobox,

And will show only the first paragraph of a blog post, and a 'read more...' link,

Also implemented in the mobile template.

Note that this change requires a database migration on an existing database (manage.py migrate).

[bartromgens]

I believe this issue can be closed now. New issues can be created for any blog related issue that may pop-up.