updating the course overview block to include a configurable news field, plus adding of a "create new course" link

[UWMOODLE-532] Updating block to include a jQuery plugin to make the animate function use css transitions.  (note that the non min js file is required because moodle strips out .min for jQuery plugins when using debugging mode)

UWMOODLE-306 block course_overview_uwmoodle: Rewrote the interface to hopefully be cleaner and more user-friendly.

UWMOODLE-306 block course_overview_uwmoodle : This is a complelety new block based on the moodle 2.4 course overview block.