Pointing footer help

Make footer help point to about help location
Adding stub for local execution
adding execution script

for local execution
no change?
Added compute.py
updated compute.py
Local execute stub
Merge branch 'master' into irjudson-local-exec

Conflicts:
	codalab/apps/web/tasks.py
	codalab/apps/web/templates/base.html
	codalab/apps/web/views.py
Merge cleanup
remove cruft
local execution mostly working

Just need to package up output and store in azure.
local execution finished.
Merge branch 'master' into irjudson-local-exec

Conflicts:
	codalab/apps/web/views.py
Merge branch 'master' into irjudson-local-exec

Conflicts:
	codalab/apps/web/views.py
Merge branch 'master' into irjudson-local-exec
Add .gitattributes
fixed paths and cleaned up label whitespace.
Rearranged local execution to get status correctly.

This processes output less conditionally.
Moved wiki content to markdown in the repo. @willum070 should review for differences.
Merge branch 'master' of https://github.com/cpoulain/codalab into cpoulain-master