Update the migration tool so that it is possible to run a migration over multiple passes.  This could be useful if deployed on a server where there is a request timeout (ie: varnish on unlcms.unl.edu used to timeout a request after 60 seconds, but has since been increased to 600 seconds).

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Modified site creation tool to use new method: add records to .htaccess. 
THE CHANGES TO .htaccess.sample MUST BE COPIED TO YOUR .HTACCESS FILE!

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Add a small amount of protection to prevent symlinks from being removed by the site creation tool when a site is removed if it had sub-sites.

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Update to site creation tool to hopefully make drupal sites more portable between installations. Part 2.

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Second, the CAS module will always use SSL when validating a user's ticket.
Third, if a user has any roles other than Anonymous or Authenticated User, they will be given SSL links while "mortal" users will use plain http.

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Bring unl_schema() up to date with latest unl_sites table changes so that a fresh drupal install will work; Fix unl_update_ functions by removing multiple adds of clean_url column which causes update to fail

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Add a list of sites already created to the site creation tool.

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Slight clean up of the way migration and site creation forms are called.  Make the output from migration tool look cleaner using drupal's status messages.

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Also make it impossible to edit the user profile form to change a password even thought the fields are normally hidden.

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