Announcing SESYNC summer workshop
* Wrap all lines of SDU workshop post
* Replace complicated explanation with one word
* Fix mark-up
* Redo wording to make it easier to parse for humans
* Fix wording to be understandable by native speakers
Merge pull request #466 from stevenkoenig/sdu-post-updates

SDU post updates
Merge pull request #464 from gvwilson/blog-sesync-workshops

Announcing SESYNC summer workshop
Fixing tag in blog post
Stephen Turner pic should not have been in the root of the repo
Fix for footer layout glitch on V4 lesson pages (#420)
Merge pull request #467 from pipitone/issue_420

Fix for footer layout glitch on V4 lesson pages (#420)
Add note to op guide to remind learners instructors/helpers are volunteers (#395)
Merge branch 'master' of github.com:swcarpentry/site
Merging changes
Merge pull request #469 from gvwilson/pipitone-issue_395

Merging changes.
Add draft of MathUI blog post