Arsenal - Search fixes

[johnb432]

When merged this pull request will:

• If two or more items had the same display name and you selected e.g. the second one, it would select the top most one when searching. E.g. having the M1 Garand selected from the CDLC SPE, but when updating the search bar, it would select the M1 Garand from the Iron Front mod.
  The fix for this is to find the class name instead of the display name.
• When searching in the listnbox panels (i.e. container content), it would deselect the currently selected item when removing characters from the search. E.g. seaching for rope and having the item Rope 15.2 meters selected, then updating the search to rop would deselect the item Rope 15.2 meters.
  Now it only deselects the item if it isn't part of the search results.
• If an item wasn't found or just generally by default, it would select the first item in the container content.
  Now it doesn't select anything by default.

The last change is a matter of opinion, can easily be reverted to selecting the first item.

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[rautamiekka]

The last change is a matter of opinion, can easily be reverted to selecting the first item.

Hell no, it ain't a matter of opinion but UX, an extremely annoying one at that, so I'm glad it's finally getting fixed.