Added SFTP support in wotaskd, in preparation of a Jenkins plugin

The SFTP server will run on port 6022. Only password authentication will work, you need to provide the password of your wotaskd installation.
Adding shell support so that we can do things like symbolic links
Merge branch 'integration' into wotaskd_ftp
Adding the TCP port number for wotaskds built-in SSH server as a property
Allowing empty passwords is a bad idea. If you wish to use the built-in SSH server, set a password for wotaskd
Merge branch 'integration' into wotaskd_ftp
Add a new fetchTaggedWith method that allows sorting.
Refactor non sortable fetchedTaggedWith to use the new sortable method but to pass in a null for the sort ordering. Duplicate code avoided.
Merge branch 'integration' into wotaskd_ftp
Adding a property to enable/disable the built-in SSH server
SSH server in wotaskd is now disabled by default
Adding RPM spec file for Apache 2.4
Adding sed call to fix the cgi-bin alias in the adaptor for apache 2.4
When installing the adaptor, the document root should be created
Merge branch 'integration' of github.com:projectwonder/wonder into integration
Merge pull request #395 from pascalrobert/wotaskd_ftp

Built-in SSH server in wotaskd (take 2)
Start the built-in SSH server of wotaskd when using the startup script from Wonder for RedHat
Merge branch 'integration' of github.com:projectwonder/wonder into integration
Fixing a mismatch between the properties name in Properties and the application class
Merge pull request #390 from coralstoneco/sortable_ertags

ERTaggable: sorting fetchTaggedWith