Move file upload options above drop zone

This moves the 'randomize filename' checkbox and 'file expiry' menu
above the drop zone, so that the user is encouraged to tweak those
options before choosing the file to upload. Fixes
andreimarcu/linx-server#187.

static/css/linx.css

@@ -251,7 +251,7 @@ body {
   flex-wrap: wrap;
   justify-content: space-between;
   width: 100%;
-  margin-top: 5px;
+  margin-bottom: 5px;
   font-size: 13px;
 }
 

templates/index.html

@@ -7,15 +7,6 @@
 {% block content %} 
 <div id="fileupload">
     <form action="{{ sitepath }}upload" class="dropzone" id="dropzone" method="POST" enctype="multipart/form-data" data-maxsize="{{ maxsize }}">
-        <div class="fallback">
-            <input id="fileinput" name="file" type="file" /><br />
-            <input id="submitbtn" type="submit" value="Upload">
-        </div>
-
-        <div id="dzone" class="dz-default dz-message">
-            <span>Click or Drop file(s) or Paste image</span>
-        </div>
-
         <div id="choices">
             <label>{% if not forcerandom %}<input name="randomize" id="randomize" type="checkbox" checked /> Randomize filename{% endif %}</label>
             <div id="expiry">
@@ -28,6 +19,16 @@
                 </label>
             </div>
         </div>
+
+        <div class="fallback">
+            <input id="fileinput" name="file" type="file" /><br />
+            <input id="submitbtn" type="submit" value="Upload">
+        </div>
+
+        <div id="dzone" class="dz-default dz-message">
+            <span>Click or Drop file(s) or Paste image</span>
+        </div>
+
         <div class="clear"></div>
     </form>
     <div id="uploads"></div>