PLT-3252 Bring up profile popover after clicking on a profile picture… (#4144)

* PLT-3252 Bring up profile popover after clicking on a profile picture in a channel

* PLT-3252 Bring up profile popover after clicking on a profile picture in a channel

remove important

* fixed 'Cannot read property first_name of undefined' bug

* fix status indicator position

* refactoring per request

webapp/sass/layout/_post.scss

@@ -646,6 +646,10 @@ body.ios {
         }
     }
 
+    .post__img:hover {
+        cursor: pointer;
+    }
+
     .post--fail {
         position: relative;
     }