Improve Old prefixes offenders readability

front/src/css/rule.css

@@ -101,6 +101,7 @@
   margin: 0.2em 0;
   border-radius: 0.4em;
   z-index: 1;
+  cursor: pointer;
 }
 .offendersTable .offenderButton.opens,
 .value .offenderButton.opens {
@@ -157,6 +158,10 @@
   display: block;
   background: #ffe0cc;
 }
+.offendersTable .smallerOffenders,
+.value .smallerOffenders {
+  font-size: 0.9em;
+}
 .offendersHtml {
   display: inline-block;
 }

front/src/less/rule.less

@@ -112,6 +112,7 @@
         margin: 0.2em 0;
         border-radius: 0.4em;
         z-index: 1;
+        cursor: pointer;
 
         &.opens {
             padding-right: 0.75em;
@@ -166,6 +167,10 @@
             }
         }
     }
+
+    .smallerOffenders {
+        font-size: 0.9em;
+    }
 }
 
 .offendersHtml {

front/src/views/rule.html

@@ -143,10 +143,18 @@
                     </div>
 
                     <div ng-if="policyName === 'cssOldPropertyPrefixes'">
-                        {{offender.rule}} {<b>{{offender.property}}</b>: {{offender.value + '}' }}
-                        <br>
-                        <b>{{offender.message}}</b>
-                        <file-and-line-button file="offender.file" line="offender.line" column="offender.column"></file-and-line-button>
+                        <b>{{offender.property}} {{offender.message}}</b>
+                        <div ng-if="offender.rules.length" ng-click="cssOldPropertyPrefixesShowMore = !cssOldPropertyPrefixesShowMore" class="offenderButton">
+                            <span ng-if="!cssOldPropertyPrefixesShowMore">show</span>
+                            <span ng-if="cssOldPropertyPrefixesShowMore">hide</span>
+                            <ng-pluralize count="offender.rules.length" when="{'one':'1 offender','other':'{} offenders'}"></ng-pluralize>
+                        </div>
+                        <div ng-if="cssOldPropertyPrefixesShowMore" class="smallerOffenders">
+                            <div ng-repeat="cssRule in offender.rules">
+                                {{cssRule.rule}} {{'{' + offender.property}}: {{cssRule.value + '}' }}
+                                <file-and-line-button file="cssRule.file" line="cssRule.line" column="cssRule.column"></file-and-line-button>
+                            </div>
+                        </div>
                     </div>
 
                     <div ng-if="policyName === 'lazyLoadableImagesBelowTheFold' || policyName === 'hiddenImages'">