Merge pull request MagicMirrorOrg#1632 from MichMich/fix-2.7.1 Fix package.json version number.

Merge pull request MagicMirrorOrg#1627 from MichMich/develop Release 2.7.0

Merge pull request MagicMirrorOrg#1498 from MichMich/develop Release 2.6.0.

Merge pull request MagicMirrorOrg#1418 from MichMich/develop Develop

Merge pull request MagicMirrorOrg#1343 from MichMich/develop Release 2.4.1

Merge pull request MagicMirrorOrg#1338 from MichMich/develop Release 2.4.0

Merge pull request MagicMirrorOrg#1245 from MichMich/electron-downgrade v2.3.1

Merge pull request MagicMirrorOrg#1241 from MichMich/develop Release 2.3.0

Add missing package-lock.json. 

Merge pull request MagicMirrorOrg#1115 from MichMich/develop Cleanup.