Remove by-default slide class on hidden teacher cover

Pre-applying `slide` watched class with Scrollsnap precludes
functionality without any error output. This resolved the situation.

Author: jordanmccullough

_javascript/curriculum.js

@@ -66,6 +66,7 @@ $(function(){
 
 
 				$("#teacher").toggleClass("hidden");
+				$("#teacher").toggleClass("slide");
 			}
 		});
 	}

_layouts/curriculum.html

@@ -26,7 +26,7 @@
 <div class="container curriculum">
   <div class="row">
     <div class="col-md-9">
-      <div id="teacher" class="slide hidden">
+      <div id="teacher" class="hidden">
         <div class="alignment">
           <div id="teacher-avatar" class=""></div>
           <div class="" id="teacher-info">