Part of MDL-59313.

Fix to:
- Make sure we properly check both user and course contexts in
the load_for_user function in navigation lib and user the
user_can_view_profile function for same-course access checks.
- Use user_can_view_profile in the renderer's context_header to
properly decide whether a user can view another user's picture
and messaging options in the page header.

Fixes a bug with context_header function in which user details were
displayed regardless of the current user's capabilities.

Mustache templates containing {{#js}} blocks are not returned via the
fragments API. This is because the requirements manager is assigned when the renderer is created
and not updated by the call to start collecting page requirements.

Add @deprecated tag for theme_config::pix_url(). Add PHPDoc block for
renderer_base::pix_url().

image_icon is a better name because there are some valid uses for these other than for activity icons.

E.g. Old JS code that is not worth re-writing.

Also change filepicker to use scaled svgs instead of sets of custom pngs. The svgs are taken from font-awesome.

Activity icons always use the standard icon renderer.

Part of MDL-55611

Part of MDL-55611

In boost we are not longer using this module, so lets limit it to
bootstrapbase only

A bit of a hack applied nearly 12 years ago in
7979105c

Also added missing advanced and required form symbols.

Center logo / site name.
Add padding to logo / site name.
Serve retina images and resize with css.
Add a line under the logo / site name.
Don't show site name if there is a logo.
Obey nonavbar option in core_renderer.

They should be left aligned with a header, content and footer (right aligned with the buttons).

There should be a primary continue button and a secondary cancel button.

This patch changes the effective response code from a 407 to a 403 when
erroring on iOS 10 and when a HTTP_X_PLAYBACK_SESSION_ID HTTP header is
found.

This causes the iOS Media framework to send the cookie with the request
which subsequently succeeds.

AMOS BEGIN
  MOV [siteyoutube,core_media],[pluginname,media_youtube]
  MOV [siteyoutube_desc,core_media],[pluginname_help,media_youtube]
  MOV [sitevimeo,core_media],[pluginname,media_vimeo]
  MOV [sitevimeo_desc,core_media],[pluginname_help,media_vimeo]
  MOV [html5audio,core_media],[pluginname,media_html5audio]
  MOV [html5audio_desc,core_media],[pluginname_help,media_html5audio]
  MOV [html5video,core_media],[pluginname,media_html5video]
  MOV [html5video_desc,core_media],[pluginname_help,media_html5video]
  MOV [flashanimation,core_media],[pluginname,media_swf]
  MOV [flashanimation_desc,core_media],[pluginname_help,media_swf]
AMOS END

Damyon Wiese authored Oct 31, 2016 and Cameron Ball committed Nov 01, 2016

Remove chunks of conflicting CSS added in various places and add navbar-nav -> nav-link to header items.

This patch includes a big set of changes that are all designed to work together to provide
a better way to navigate in the new theme, and a different way of working with blocks.

Blocks have been moved to a "drawer" that can be opened and closed (this is remembered in a user pref).

A new "flat navigation" element is also available in a drawer - which should let you do 90% of things
without needing to open the "blocks" drawer.

The flat navigation is build from specific parts of the nav tree - the top nodes like "calendar, dashboard" are
hand picked. There is a mycourses node listing your enrolled courses.

There is a node for the current course, built from the top nodes in the current course node in the nav tree.

Administrators have a link to the Site admin settings here too.

These nav elements are used by the templates for the new theme, which also has a resigned layout for login and signup.

There have also been some additional fixes / improvements to the ...

The order of inclusion of weblib and outputlib had to change
as the progress_bar (weblib) uses interfaces defined in outputlib.