MP1-4274 : Fix null reference after bumping version.
MP1-4276 : Extended Disk Quota logging.
Merge remote-tracking branch 'remotes/origin/FEAT_Last.fm_API_2.0'
Merge remote-tracking branch 'remotes/origin/MP1-4274-BUG-Bump_subsystem_versions_MP.Plugins.Music_DB.Music_and_MP.Externals.HTMLAgilityPack'

Conflicts:
	mediaportal/Configuration/Sections/PluginsNew.cs
MP1-4279 : Remove MySQL 5.6 upgrade on MP Upgrade.
MP1-4280 : Check NET4.0 Full version if not installed Show Missing Component.
MP1-4276 : Cleanup code.
Merge remote-tracking branch 'remotes/upstream/master' into 1.5.0Fork
Merge remote-tracking branch 'remotes/upstream/MP1-4279-BUG-MySQL_on_Fresh_Installation' into 1.5.0Fork
Merge remote-tracking branch 'remotes/upstream/MP1-4280-BUG-NET4_Detection_for_Full_version_only' into 1.5.0Fork
Merge remote-tracking branch 'remotes/upstream/MP1-4276-BUG-Misleading_logging_in_TV_disk_quota' into 1.5.0Fork