Update button styles

Replace Bootstrap 3 button default style with Bootstrap 4 equivalent.

Update review pages

Show the same options for reviews on the dashboard and on review screens.
Add title to all pages within the review section.

Improve proposal/review styling

Use correct block for page titles. Fix element styles to be consistent
across site. Use fluid layout for review to enable sidebar.

Attempt to rework the review screen to be more useful
Fix indenting and whitespace

because it was the only way to track down the errors..

More consistent color-coding for talk status buttons

- there's no btn-default, switch that to btn-primary
- consistently use info for standby, primary for undecided, success
for accept and warn for rejected

Remove jquery.history.js reference

* This reference was added in the very distant past
* But jquery.history.js itself has never been in the repo
* pyconau-2017 team resolved the dilemma but dropping
jquery.history.js into the repo
* But as near as I can tell, this does nothing except in obsolete
older browsers. The fact that it's been broken ever since it was
"added" is highly suggestive of it never having ever been used or
needed
* So, trim the fat. It's possible that this might break an older
browser that needs the functionality jquery.history.js provides -
except that such a browser would *already* be broken because
jquery.history.js has never actually been around to be used.
* If we ever do need this functionality, we can revert this
change.. and then we'd have to drop in jquery.history.js. In that
circumstance,
https://github.com/pyconau2017/symposion/commit/34bc7c0 may be of interest.

Fix review buttons by removing stale compiled JS; also some styling

Essentially cognate with 0673e35 from the pyconau-2017 fork.

Simplify django form rendering

Remove my hack to get bootstrap forms.

Remove the insane render-row-at-a-time forms that then only render
default django forms.

Bootstrapification

Boot custom CSS, and put some base, standard css in its place.
Shame I did not start with fresh Bootstrap4, but oh well.

Some more templates could be made to make this less messy, which would
be good.

Remove dj-user-accounts

That's a nice macro, but we don't need it.
dj-user-accounts stands in the way of using more generic AUTN_METHODS

September website changes - Pre-registration (#66)

* Factors rendering of external links into its own template. Automagical!

* Adds wagtail templates for keynotes on the front page

* Migrates to Wagtail 1.6

* Migrates content pages to be a streamfield. Flexibility++.

* Fixes editing of ContentPage bodies

* Adds floating images to content pages

* Fixes the layout of floating images

* Adds anchor links to content pages.

* Adds presentation link to the keynote speaker block model

* LCA-ifies the schedule list

* Refactors cms_pages/content_page into a new base template

* cms_pages/content_page now derives from abstract_content_page

* news_index_page now derives from abstract_content_page

* news_page now derives from abstract_content_page.html

* utility_page now uses the content_page base template

* Factors out _right_floating_image.html

* Themes the presentation detail page

* Themes the speaker profile page.

* Themes the schedule list page.

* Minor work on schedule_conference.html

* Themes schedule_detail.html

* Replaces cradle.svg

* Adds a background image to the schedule pages

* Adds libravatar fallback for speaker profile images

* Adds new background images (must update colophon)

* Adds some magic so that we can have slightly different presentation backgrounds for different pages.

* Adds the sponsor block to the bottom of the page.

* Adds sponsor logos to footer.

* All migrations are now in this tree

* Fixes wagtail migrations

* Adjusts presentation_detail to allow for miniconfs (i.e. no target audience)

* Adds unpublishing to presentation detail

* Adds ScheduleHeaderParagraph, which allows us to add some text to the header of schedule pages.

* Adds NamedHeaderParagraph. It allows us to store header paragraphs in the CMS.

* Date formatting in the schedule

* First step for fixing images

* Allows us to automagically load the colophon

* Adds “publish changes” button.

* Can login with email address

Modifications to review_admin.html (#62)

* Modifications to review_admin.html

* Adds “submit & jump to random proposal” button

* If user has a speaker profile, display their speaker profile name alongside their comments instead of their user name.

Tuesday & Wednesday work (#30)

* Fixes an incorrect link in dashboard

* Disables the symposion sponsors app

* Adds redirect links for login/logout; adds THEME_CONTACT_EMAIL value

* Re-adds colophon/copyright message.

* Adds AceMarkdownEditor widget

* Tidies up the generated HTML

* Tidies up form snippet behaviour

* Proposals forms now use the markdown editor

* Monkey patches the markdown editor into the speaker form.

* Adds missing field to proposal details

* Fixes #10 — adds a link to random unreviewed proposals

* Minor tweaks

Update template so only managers can post messages to speakers. (#3)

* Template changes so only papers committee manager can send messages to speaker. lca2017/symposion#3

(also manager can accept/reject/etc)

Change templates to use +2/+1/-1/-2 voting scores (#2)

* Change review templates to reflect LCA voting scores

* Change review templates to reflect LCA voting scores