Major tasks undertaken in this patch:
* New format_text argument, overflowdiv.
* New page layout Report.
* Review of all format_text calls.
* Added support for the report layout to all themes.
* Changed forum post display from tables to divs.

course formats MDL-22647 Course format names are now properly supported and used. Big thanks to Brandon Turner for the patch.

navigation MDL-14632 Added fuzzy matching as a worst case scenario to find the active node and tidied up course report page layouts

* class html_component does not exist any more
* class html_table rendered via html_writer::table()
* html_table, html_table_row and html_table_cell have public $attributes property to set their CSS classes
* dropped rotateheaders feature, should be added again after more research of possible ways (<svg> is not nice IMHO)
* dropped possibility to define CSS classes for table heading, body and footer - can be easily done and better done using just table class and context

MDL-21233 moodle_url improvemewnts, code simplification, more diagnostics; fixed several regressions

MDL-21235 new link method in html_write, partinally replaces old html_link, going to add new action_link soon

MDL-20700 coding style cleanup - cvs keywords removed, closign php tag removed, trailing whitespace cleanup

output MDL-19799 Fixed up some set_url calls as well as fixing some regressions caused by recent upgrades

Moved $action argument from arg5 to arg2

course MDL-19794 Upgraded print_header and build_navigation calls to use PAGE and OUTPUT equivilants

and $CFG->modpixpath to $OUTPUT->mod_icon_url

MDL-10870 All files updated to new build_navigation() method. Most are untested, because they are not easily accessible within a moodle site.

(http://moodle.org/bugs/bug.php?op=show&bugid=5714)

Merged from MOODLE_16_STABLE

lots of typos fixed, graph in stats, parameter cleanup etc., somebody could cleanup the page layout of those report/xxx/mod.php files ;-)

This one is Outline Report

optinal_param() plus other tweeks to suit. Improve security.