Merge pull request #651 from Stanford-Online/sef-work

A couple of small changes made while working with @jbau

LGTM
Merge branch 'master' of github.com:Stanford-Online/class2go into jbau-celery-email
add link to email function under Course Admin dropdown #594
Merge branch 'master' of http://github.com/Stanford-Online/class2go into dca_working
Merge branch 'master' of github.com:Stanford-Online/class2go into sef-work
added exponential backoff and task lists to retries to reduce repeat email #559
Merge branch 'jbau-celery-email' of github.com:Stanford-Online/class2go into sef-work
Merge pull request #662 from Stanford-Online/jbau-celery-email

Email using celery
Merge branch 'master' of github.com:Stanford-Online/class2go into sef-work
celery email task log stderr, if any, from lynx
Merge pull request #663 from Stanford-Online/jbau-celery-email

celery email task log stderr, if any, from lynx
Merge branch 'master' of github.com:Stanford-Online/class2go into sef-work
Removing old files from project root

Now that more people are looking at our source, all this old crufty
stuff at the root is just confusing.  Five trees removed that fit into
this category: css, js, examples, sample_video, and problem_sets.

Also nuking flypaper, my horrible creation, since the VM that it was
running on has now been decommisioned, and replaced by much better
content at http://class2go.stanford.edu/ (thanks Mike).

Chose *not* to remove offline since that has some JS that may be useful
when we bring that feature back to life.
Make clear that times are in seconds, and only one goes in each field
exception handlers for video views #669
Merge pull request #664 from Stanford-Online/sef-work

Pull request, two small things: celery config, multitail function
Merge pull request #667 from Stanford-Online/jinpa-work

Make clear that times are in seconds, and only one goes in each field
Merge pull request #670 from Stanford-Online/jbau-celery-email

exception handlers for video views #669
Clean up edit video form code

 - Switch to common_page_data middleware
 - Make reset button its own empty form instead of unnecessary
   association with all video fields
Merge branch 'master' of http://github.com/Stanford-Online/class2go into dca_working