Conflicts:

	htdocs/lib/web.php

While I was doing that, internationalised the one for wall posts, and
refactored the generation of the help message to a function.

This is needed for forum activity notifications. Though it would be better if those notifications could be in HTML format.

This change makes the standard nav a separate function from being within the MAINNAV.

This allows alternative nav scheme to leverage the plugin navigation elements.

This allows alternative nav scheme to add properties to mahara nav scheme and avoid unnecessary loops.
(cherry picked from commit 12b40c4537fafb33a9b4e463be19cf85dc8e27ae)

Fix the problem where even numbers of spacing showed up as having one less space than they should have.

This uses the third-party StringParser_BBCode library I found, that so far seems to work fine.

Also added auto-linking support so we can link URLs up when people use bbcode.

(cherry picked from commit 088781c740c0cf821a9abea1a2d6bfad263c2d09)

Add htmlpurifier filter for Skype button; let script tags through from TinyMCE & don't rewrite 'skype:' urls

The length of time since last access that tells whether a user has been online recently is configurable.

The block can also be disabled with a configuration parameter.

More work on profile views and three new blocktypes (myfriends/mygroups/myviews) to emulate current profile page TODO: - write wall blocktype - change install default profile view hook to add blocks - upgrade path (xmldb & migration) - blocktype and category and singleblockperview implementation

    - TESTING

Use the session's authinstance information for userauthinstance rather than $USER->lastauthinstance, which, while it might be correct due to session caching in the $USER object, isn't strictly "right".

The member list is able to be ajax-ly paginated through, and shows more detail than the previous one.

The page layout is showing shadows of what it will eventually become, although a lot of functionality isn't there yet - like joining/leaving the group.

It's much less ambiguous. Should help with users confused as to what it does.
(cherry picked from commit 15cfe974)

This makes it easy to tell when you are doing this on all pages - not just on pages where the sidebar is visible.
(cherry picked from commit ba080c55)