Run slightly less afoul of accessibility checks. #294.

This makes the clickable element an interactive element, but doesn't add
alt text and makes it not-obvious that you can click the elefriend.  On
one hand, this goes against good practice; on the other hand, it's not
*supposed* to be obvious that you can click the elefriend.

app/javascript/flavours/glitch/features/drawer/index.js

@@ -101,7 +101,7 @@ class Drawer extends React.Component {
           <DrawerAccount account={account} />
           <div {...innerDrawerAttrs}>
             <Composer />
-            {multiColumn && <div className='mastodon' onClick={onClickElefriend} role='button' />}
+            {multiColumn && <button className='mastodon' onClick={onClickElefriend}/>}
           </div>
           <DrawerResults
             results={results}