[fix] IE8 JS fixes
[fix] More IE8 Fixes

[fix] IE8 Object doesnt support this action

[fix] avoid using Mootools store method on jQuery items. IE8 fix

[fix] Searchtools filters not shown on IE8

[fix] avoid regresion. Thanks @wilsonge
[fix] overrider requires mootools-more
[fix] IE8 - searchtools placeholder sent as value
Merge pull request #3474 from phproberto/ie8-george

IE8 fixes for validation, searchtools, etc.