* luci/libs/uvl: prevent "Value "" of option "qos.wan.enabled" does not validate as datatype "boolean"" error in qos pages
* luci/libs/uvl: prevent "Value "" of option "qos.wan.enabled" does not validate as datatype "boolean"" error in qos pages


git-svn-id: edf5ee79c2c7d29460bbb5b398f55862cc26620d@3225 ab181a69-ba2e-0410-a84d-ff88ab4c47bc

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