The registration_textfield conflicts with the form default styling and breaks form layout.

Hide the navigation elements, flat navigation settings menus etc when
printing.

Adrian Greeve authored Nov 16, 2016 and Dan Poltawski committed Nov 23, 2016

This adds the most crucial elements needed for making
the messaging page accessible. There are still some other
areas that need addressing.

The events list is now a list of cards with headers.
Spacing and layout is now done with bootstrap utility classes.
The existing classes were kept - and the styles for bootstrapbase are not changed much.
Also calendar colours can be overridden from a preset.

Add boost styles to marking guide entry form.

These styles mostly remove the responsiveness from the grading form.

The checkbox form template was changed, so this custom rule needs
updating.

Make sure they get minimum and maximum width so they don't overflow and
don't appear tiny.

Changes include:
* question: Add bootstrap classes to buttons and selects so they look consistent.

* mod_quiz: Add bootstrap styles to report form elements

* question: Add bootstrap classes to question form elements

* And remove the success/fail styles from boost because they conflict badly
with the quiz plugin styles (making unreadable text).

* quiz: nav block buttons had black background

* quiz: Add bootstrap styles to quiz navigation buttons

* qtype_ddmarker: Remove bullets from list

Edit form coordinates preview had list bullets for each coordinate.

* boost: Prevent menu scrolling on quiz edit

* mod_quiz: Add bootstrap styles to edit quiz fields

Pagination and max grades forms.

* quiz: Undo some custom styles on review options

These checkboxes were laid out in a fake grid with no responsiveness
that conflicts with the bootstrap form-inline templates. Reset the
custom style to bootstrap default.

* quiz: Fix unit tests for boost changes

* qtype_ddwtos: Accurate positioning of drop targets

* questions: Make the review page responsive

* question: bootstrap 4 compatibility

.alert in bs4 contains no colours by default, you need to mix it with
one of the context classes to get some change in colours, borders etc.

Because Bootstrap Javascript does is not expecting to be flipped, it breaks the popover on RTL languages.
We already swap the directions on the help icon template so popover scss rules can be ignored.

This was present in bootstrapbase and is I think an important visual
distinction.

month is displayed in table caption which is by default in the bottom in BS4

Added a link to create a new message from the message
popup menu.

Remove existing overrides forcing the markup off

No idea what happened to my testing of this change, but it was wrong.

Bootstrap makes select form elements not using custom-select broken when
they have a size. The contents overflow the field.

Use a bootstrap popover for the assign roles form.

This just injects bootstrap classes into the old yui2 thing. It needs
rewriting.

The main change is that in boost we get rid of the random centered text.
To compensate we use "container" which is fixed with with auto margins -
but the text is still left aligned.

I stayed away from big markup changes. This is a table layout so needs rewriting which is a big job.

I removed most of the layout styles and started again.

Increased bottom padding to allow space for the lower edit menus to be
displayed without a vertical scrollbar.