Description of problem:
Satellite doesn't convert the matcher to downcase when adding a new matcher field and a matcher in one go from the Web UI.

Steps to Reproduce:
1) In the smart class parameter edit page you add a new "TesT" (title case) field to the Order textbox.
2) You have an existing matcher "fqdn=some.content.host.com".
2) Then click "Add Matcher" to add a new matcher "TesT=true".
3) Click the "submit" button to save
4) Revisit the "edit" page and get "Oops, we're sorry but something went wrong comparison of Array with Array failed"

Reason:
This is because Satellite converted the value in step (1) to down case but leaving the matcher in step (3) as it is. When rendering the page, Satellite can't find the field for the matcher in the list of array.

It found the index of "fqdn" in the array (return an integer) but can't find the index of "TesT" in the array (nil). Comparing nil with 1 raises the following error.

irb(main):002:0> [[nil], [1]].sort_by{|v| v}
ArgumentError: comparison of Array with Array failed


Actual results:
Can't access the edit page

Expected results:
Can access the edit page