Fix various issues.

git-svn-id: http://svn.code.sf.net/p/openmediavault/code/trunk@1279 3c3d7b80-5828-415e-9f61-280b98178fff
Fix bug in OMVNetworkInterfaces::enumerate() method.

git-svn-id: http://svn.code.sf.net/p/openmediavault/code/trunk@1280 3c3d7b80-5828-415e-9f61-280b98178fff