Features:
* Add a new account.
* Switch accounts.
* Log out of an account.
Also added a cancel button to the login UI which is only shown when a user is adding an account. In that case, the operation should be and is cancellable.
Fixed AuthManager sending incorrect client token to the auth endpoint.
Fixed minor issues with the validate selected function.
Fixed minor issue related to UI transitions.
Added account validations on startup and when account is switched.
Updated dependencies.
Basic selection and updating of the selected server has been added. There are a few subtle mechanics which need to be added still, such as keybind shortcuts (enter to submit, etc). In addition, functionality still needs to be added to generate the list of servers from the manifest file.
Fixed a minor issue with the login view.
Updated play button styles.
Updated dependencies.
Moved server selection styles to launcher.css, as they are nearly finished.
Moved overlay convenience functions to overlay.js.
Moved launch area (landing.ejs) convenience functions to landing.js.
Various cleanups and documentation also added.
Moved landing.ejs specific scripts to a dedicated file. General cleanup for other script files. Need to examine the remaining code in actionbinder.js to determine the most logical place for it.
