Update jqm-icon-pack-fa.scss

Correcting ".ui-icon-searchfield::after" to ".ui-icon-searchfield:after"
Update jqm-icon-pack-fa.css

Correcting ".ui-icon-searchfield::after" to ".ui-icon-searchfield:after"
Merge pull request #50 from SchulteMarkus/master

Correcting ".ui-icon-searchfield::after" to ".ui-icon-searchfield:after"