* Adds 'enabled' column into 'users' table with database/migration.js file.
* Ignore errors when adding new columns in database/migration.js. There's a better method by checking whether the columns already exist before adding them, but this will do for now.
* Properly merged changes from master.
* database/migration.js will now exit after migartion.
* Replaced all instances of createTableIfNotExists() into a combination of hasTable() and createTable() in db.js.
* It will now properly create "editedAt" and "zipGeneratedAt" columns into "albums" table, which will then be used for the "Download Album" feature. Previously, due to the lack of those columns, people could not download albums. Existing installation will have to do some manual patches, which I will describe further in the commit's comments.
* Thumbnail-less files will properly show the extensions in albums. Previously it would have two dots.
* 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.
