Improve the format of the HTML representing a forum post.
1. Use <article> tag to mark it correctly.
2. Use <time> tag to include the real datetime information.
3. Use <address> tag to specify who and when the post came from.
4. Use heading level tags to mark the subject of each post.
5. Properly nest reply posts within their parent <article>
6. Use a header tab for each article to split the metadata from the content.
7. Use CSS to separate links, not text content.
Because posts are now nested properly, the heading for each one refers to it's own article
and we don't need to generate arbitrary heading level tags depending on how deep the post
is nested.
This change rewrites the way in which expiry is calculated and addresses
a number of closely related issues:
Users can customise, and add blocks with data to, their dashboard. When
a user had done so, the user could be flagged for deletion, but the
blocks in their Dashboard were subject to the default block retention
policy. In addition there is no way to override the retention policy for
user blocks.
This change modifies the structure of the expiry mechanism:
- to consider any subcontext of the user context to be a part of the user
context during calculation. User child contexts are not the property
of the system, and should not be treated separately.
- the way in which the context expiry mechanism worked was to select
use a multiple different managers based solely on the context level.
Because of the use of user blocks, this proved to be unreliable as
blocks has been attributed purely to courses.
This has been changed to a single manager which is aware of hierarchy
and deletions as a whole.
- to prepare for upcoming work relating to more detailed expiry
mechanisms, a new expiry_info class is introduced and used to
merge the expiry of child contexts into a working in-memory view.
This changeset includes extensive unit tests.
The call stack size was being exceeded via a recursive loop brought
by MDL-61189.
To fix, this item removes MDL-36803 and MDL-41328 as the iOS keyboard works
nicely on Safari with TinyMCE.
