Fixed some button positioning / dialog widths

frontend/src/components/AutoLogout.vue

 <template>
   <v-dialog
     persistent
-    width="fit-content"
+    max-width="30%"
     v-model="logoutDialog"
   >
     <v-card>

frontend/src/components/submission_notes/base/CommentForm.vue

 <template>
   <div>
-    <v-text-field
+    <v-textarea
       name="feedback-input"
       label="Please provide your feedback here"
       v-model="currentFeedback"
@@ -8,7 +8,7 @@
       @keyup.esc="collapseTextField"
       @focus="selectInput($event)"
       rows="2"
-      textarea
+      outline
       autofocus
       auto-grow
       hide-details

frontend/src/components/submission_notes/base/FeedbackComment.vue

@@ -144,7 +144,7 @@ export default {
     white-space: pre-wrap;
   }
   .delete-button {
-    bottom: -15px;
+    bottom: -12px;
     left: -42px;
   }
   .comment-created {

frontend/src/pages/Login.vue

 <template>
   <v-container fill-height>
     <v-layout align-center justify-center>
-      <v-dialog v-model="registerDialog" max-width="fit-content" class="pa-4">
+      <v-dialog v-model="registerDialog" class="pa-4" max-width="30%">
         <register-dialog @registered="registered($event)"/>
       </v-dialog>
       <v-flex text-xs-center xs8 sm6 md4 lg2>