First patch

Added some color, added import from file and added stuff to not roll a single element.

src/index.html

@@ -37,6 +37,9 @@
             <div id="options">
                 <input type="checkbox" id="remFromBOnMatch" onclick="updateOptions()"/><label for="remFromBOnMatch">Remove element from group B when it has a match</label>
                 <br/>
+                <input type="file" id="fileImport"/>
+                <button type="button" onclick="importFile()">Import from file</button>
+                <br/>
                 <button class="start" onclick="reroll()">Finish</button>
                 <button class="start" onclick="reset()">Clear ALL data</button>
             </div>