Squashed 'local_modules/node-caldav/' content from commit 6af5e0a

git-subtree-dir: local_modules/node-caldav
git-subtree-split: 6af5e0a45a481b8af3a82d1621ad7039fa8f887a
Merge commit 'f47279c67204c967b45d8e15a990e7c974db398e' as 'local_modules/node-caldav'
install the local private module.