changed: the system_log table can now store ipv6 addresses
changed: page title now matches the document title
Merge pull request #5825 from jeabakker/activity-page-title

Activity page title now matches the document title
Fixes #5834. Wrapping input with label to prevent line break.
Fixes #5898. Fixed selector for finding the only friends checkbox.
reported content now uses new core language strings
thewire now uses new core language strings
uservalidationbyemail now uses new core language strings
Ports data model docs from wiki
logrotate now uses new core language strings
Merge pull request #5906 from ewinslow/database-docs

Ports data model docs from wiki
blog now uses new core language strings
bookmarks now uses new core language strings
diagnostics now uses new core language strings
file now uses new core language strings
embed language string no longer used
groups now uses new core language strings
use a core language string for no results
members now uses new core language strings
messages now uses new core language strings