Prevent hiding header components in FDeckChooser

git-svn-id: http://svn.slightlymagic.net/forge/trunk@25419 269b9781-a132-4a9b-9d4e-f004f1b56b58
Fix splash progress bar when loading cards

git-svn-id: http://svn.slightlymagic.net/forge/trunk@25420 269b9781-a132-4a9b-9d4e-f004f1b56b58
Refactor some shared logic into SFilterUtil

git-svn-id: http://svn.slightlymagic.net/forge/trunk@25421 269b9781-a132-4a9b-9d4e-f004f1b56b58
Support showing variant buttons based on applied variants

git-svn-id: http://svn.slightlymagic.net/forge/trunk@25422 269b9781-a132-4a9b-9d4e-f004f1b56b58
Fix so Advanced variants updates layout

git-svn-id: http://svn.slightlymagic.net/forge/trunk@25423 269b9781-a132-4a9b-9d4e-f004f1b56b58