Institution statistics page links are not fully accessible by screen readers

[Robert Lyon]

When tabbing through the statistics page on

User tab:
- the 'Your average user...' links are meaningless - they need to have some accessible text like 'User with most pages is' etc
- the table of data might need to be tabbed to

Pages tab:
- the links in the 'Most popular pages' table are meaningless - need to indicate what the links are for and the ranking they represent. Eg Profile page <accessible-hidden>accessed X times, ranking Y</accessible-hidden> | <accessible-hidden>owned by</accessible-hidden> Test user

Content tab:
- the links in the 'Content statistics for the current week' table are meaningless - need to indicate what the links are for and the modified/total counts. Eg Artefact: Journal <accessible-hidden>modifed X times this week, total count Y</accessible-hidden>

Historical data tab:
- No unaccessible links

[Mahara Bot (dev-mahara)]

Patch for "master" branch: https://reviews.mahara.org/3389

[Mahara Bot (dev-mahara)]

Reviewed: https://reviews.mahara.org/3389
Committed: http://gitorious.org/mahara/mahara/commit/d8ff10a5e9144f8b4b7b755f3e785d9fcb8b58a9
Submitter: Aaron Wells (<email address hidden>)
Branch: master

commit d8ff10a5e9144f8b4b7b755f3e785d9fcb8b58a9
Author: Robert Lyon <email address hidden>
Date: Wed May 28 12:20:41 2014 +1200

Making the links in the stats page be more accessible (Bug #1323859)

Getting the links to be more descriptive to screen readers

Have also pluralised the strings based on the user with the most as
that is an integer. The average is a float number and also we can't
do pluralisation on stings where there are more than one number in the
string.

Change-Id: I89340a31c234185450f7e4e665398c9633674e9c
Signed-off-by: Robert Lyon <email address hidden>