MDL-41615 quiz_mod: fix heading levels for usability and accessibility

theme/base/style/core.css

@@ -368,7 +368,7 @@ input#id_externalurl {direction:ltr;}
 .groupmanagementtable #addselect_wrapper label {font-weight: normal;}
 .dir-rtl .groupmanagementtable p {text-align: right;}
 #group-usersummary {width: 14em;}
-.groupselector {margin-top: 3px;margin-bottom: 3px;}
+.groupselector {margin-top: 3px;margin-bottom: 3px;display: inline-block;}
 
 /**
  * Login

theme/base/style/question.css

@@ -51,7 +51,7 @@ body.path-question-type .fitem_fgroup .accesshide {font: inherit;left: 0;positio
 .dir-rtl .que {text-align: right;}
 
 .que .info {float: left;width: 7em;padding:0.5em;margin-bottom: 1.8em;background: #eee;}
-.que h2.no {margin: 0;font-size: 0.8em;line-height: 1;}
+.que h3.no {margin: 0;font-size: 0.8em;line-height: 1;}
 .que span.qno {font-size: 1.5em;font-weight:bold;}
 .que .info > div {font-size: 0.8em;margin-top: 0.7em;}
 .que .info .questionflag.editable {cursor:pointer;}

theme/bootstrapbase/less/moodle/core.less

@@ -434,8 +434,11 @@ a.skip:active {
 .groupselector {
     margin-top: 3px;
     margin-bottom: 3px;
+    display: inline-block;
+}
+.groupselector label {
+    display: inline-block;
 }
-
 // Login
 .loginbox {
     margin: 15px;

theme/bootstrapbase/less/moodle/question.less

@@ -165,7 +165,7 @@ body.path-question-type .fitem_fgroup .accesshide {
     border: 1px solid darken(spin(@grayLighter, -10), 7%);
     .border-radius(2px);
 }
-.que h2.no {
+.que h3.no {
     margin: 0;
     font-size: 0.8em;
     line-height: 1;