* Change languages build to use less memory
Add graceful-fs so no ned to worry about fs limits
* Specify encoding for fs.readFile
Use eachLimit since graceful-fs handles that now
* ability for users to choose how they receive notifications
add type field to more notifications, the type field is used to
determine what to do based on user
setting(none,notification,email,notificationemail)
* change var name to types
* cleanup
* add event types for privileged users
* remove unused language keys
* fix uids check
* changed if statements
* upgrade script to preserver old settings
* Fix if cover URL is external URL
Currently, when cover:url is an external URL, it's concat with relative path
* Fix if cover URL is external URL
Currently, when cover:url is an external URL, it's concat with relative path [fix barisusakli]
* Fix missing '
* Add User (uid) Welcome Notification
* Revert "Fix missing '"
This reverts commit 2da2d98ae2.
* Revert "Revert "Fix missing '""
This reverts commit f4fca746e8.
* Revert "Add User (uid) Welcome Notification"
This reverts commit 831e291e78.
* Fix eslint doesnt like nesting ternary operators
* fix space after if
* Better fix for #5993
Also a nice newline so the line doesn't get overwritten when running `./nodebb upgrade`
* Optimizations for custom homepage
Move it into a separate module
* cache mongodb objects
remove user settings cache since it is cached at the object level
* removed indexOf from isMemberOfSets
* change has to get, change maxAge to 0
Bumping eslint & configs meant making some linting fixes
For future reference, the `xmlhttprequest-ssl` library must be of equal versioning to the one in `engine.io-client`, otherwise it won't be deduped which causes the socket.io tests to fail
