MP1-4262 : Fix NET4.0 LastFMLibrary project.
Merge remote-tracking branch 'remotes/origin/master' into FEAT_Last.fm_API_2.0

Conflicts:
	mediaportal/Configuration/Sections/PluginsNew.cs
Merge remote-tracking branch 'remotes/upstream/FEAT_Last.fm_API_2.0' into 1.5.0Fork

Conflicts:
	mediaportal/Configuration/Sections/PluginsNew.cs