Create GraceHopper.md

Adding entry for the Grace Hopper Celebration 2013
OpenStack Summit Hong Kong
Adds OpenWorldForum in Paris
Description of OpenStack Summit
Order the talks correctly.
Merge pull request #70 from rbowen/rcb-20130926

Rcb 20130926
Merge pull request #66 from mairin/patch-2

Create GraceHopper.md
Adding Libre Graphics Meeting for 2014
weekdays messed up sort order (oops) — work around bug in confcal