MP1-4393 : use/define Full3D constant value.
Revert "Merge remote-tracking branch 'remotes/origin/MP1-4410-BUG-Crash_MP_or_Configuration_when_xml_files_is_corrupt'"

This reverts commit d9c4441a33b384700035de59ebe6ddf0736df0b4, reversing
changes made to b35cccebd47d473d85c5c5a37494aadf8e2cee4d.
Fix folder name by using workaround (rename files to the correct directory) using :
git mv -f mediaportal/mediaportal.base/LastFMHelper.dll mediaportal/MediaPortal.Base/LastfmHelper.dll
git mv -f mediaportal/mediaportal.base/skin/Titan/myrss.xml mediaportal/MediaPortal.Base/skin/Titan/myRSS.xml
git mv -f mediaportal/mediaportal.base/skin/Titan/DialogNotifyLastFM.xml mediaportal/MediaPortal.Base/skin/Titan/DialogNotifyLastfm.xml
git mv -f mediaportal/mediaportal.base/skin/Titan/Media/Last.fm_Logo_Black.png mediaportal/MediaPortal.Base/skin/Titan/Media/Last.FM_Logo_Black.png
When merging Master branch to your branch, you will need to delete your 4 local above files then the merge will be ok and the branch will be corrected.
Merge remote-tracking branch 'remotes/origin/master' into MP1-4427-BUG-KnownExtensions.xml_increases_in_size_when_refresh_update_info_is_run_in_MPEI