Various improvements (#359)

* Fix markdown paragraphs in comments
* Remove autofocus on user registration form
* Show (new) edit button for Post only to power users
* Add email address under name in Likes box

app/javascript/components/Post/LikeList.tsx

@@ -26,8 +26,11 @@ const LikeList = ({ likes, areLoading, error}: Props) => (
       {
         likes.map((like, i) => (
           <div className="likeListItem" key={i}>
-            <Gravatar email={like.email} size={28} className="gravatar" />
-            <span className="likeListItemName">{like.fullName}</span>
+            <Gravatar email={like.email} size={32} className="gravatar" />
+            <div className="likeListItemUserInfo">
+              <span className="likeListItemName" title={like.fullName}>{like.fullName}</span>
+              <span className="likeListItemEmail" title={like.email}>{like.email}</span>
+            </div>
           </div>
         ))
       }

app/javascript/components/Post/PostP.tsx

@@ -243,9 +243,11 @@ class PostP extends React.Component<Props> {
                 <PostStatusLabel
                   {...postStatuses.find(postStatus => postStatus.id === post.postStatusId)}
                 />
-                <ActionLink onClick={toggleEditMode} icon={<EditIcon />} customClass='editAction'>
-                  {I18n.t('common.buttons.edit')}
-                </ActionLink>
+                { isPowerUser &&
+                  <ActionLink onClick={toggleEditMode} icon={<EditIcon />} customClass='editAction'>
+                    {I18n.t('common.buttons.edit')}
+                  </ActionLink>
+                }
               </div>
                 
               <ReactMarkdown