Fixes bug 891921 - Removed all files related to the old, obsolete middleware.
bug 910006 - print nested list options correctly, r=adrian
fixes bug 931242 - more fine grained permissions on data access, r=adrian
Merge pull request #1660 from AdrianGaudebert/891921-remove-deprecated-middleware

Fixes bug 891921 - Removed all files related to the old, obsolete middleware.
fixes bug 932064 - Add duration of jobs to crontabber_log table
more lenient duration test
using INTERVAL instead of NUMERIC