Hotfix/hide token (#45)

* add ability for using tokens * hide token * remove changes from the other PR

Author: derBroBro

app/elements/login-form.html

@@ -146,7 +146,7 @@
 </div>
 <div>
 <iron-a11y-keys target="[[targettoken]]" keys="enter" on-keys-pressed="_login"></iron-a11y-keys>
-<paper-input id="tokenfield" value="{{token}}" label="Token" disabled="{{loading}}"></paper-input>
+<paper-input id="tokenfield" value="{{token}}" label="Token" type="password" disabled="{{loading}}"></paper-input>
 </div>
 <div>
 <iron-a11y-keys target="[[targetuser]]" keys="enter" on-keys-pressed="_login"></iron-a11y-keys>