Update OpenCollar - hide.lsl

one button 'Stealth' in Appearance menu, if there is no 'hideable' elements in collar
Update OpenCollar - hide.lsl

BuildElementList at rez
Update OpenCollar - hide.lsl
Update OpenCollar - hide.lsl
Merge pull request #356 from RomkaSwallowtail/patch-3

Update OpenCollar - hide.lsl  "One button"