* Added "Size" column to list view of uploaded files. The size will be use 'pretty' view (kB, MB, etc).
* Added delete button to thumbs view of uploaded files.
* All instances of "file length" in public views renamed to "file name length". The latter makes more sense.
WARNING: Please turn off lolisafe before upgrading, then run "node database/migration.js" once after upgrading. Ignore all errors/warnings about duplicate column name. Afterwards make sure your config.js follows the new format in config.sample.js (specifically fileLength and generateThumbnails options).
* generateImageThumbnails and generateVideoThumbnails options in config.js is now renamed to an object named generateThumbnails, with image and video as its properties.
* fileLength option is now an object with min, max, default and userChangeable as its properties.
* User may now change their preferred file length (following the previous option, of course).
* Updated a bunch of responses messages. Mainly appending a dot to the messages.
* New APIs:
/fileLength/config to get an object of the current fileLength config (exactly what is in the config.js file).
/fileLength/change to change user's preferred file length.
* And maybe some others ...?
* Switched ESLint + Aqua to Standard. I'm a big fan of Standard. Updated yarn.lock file too.
* Lots of refactors to follow the rules of Standard.
* Fixed issue with uploading as a not logged in user.
