Update ieee.csl (JabRef#4636)

ieee.csl

@@ -30,6 +30,9 @@
       <email>[email protected]</email>
       <uri>http://giuseppesilano.net</uri>
     </contributor>
+    <contributor>
+      <name>Patrick O'Brien</name>
+    </contributor>
     <category citation-format="numeric"/>
     <category field="engineering"/>
     <category field="generic-base"/>
@@ -184,17 +187,13 @@
       <if type="webpage post post-weblog" match="any">
         <choose>
           <if variable="URL">
-            <group delimiter=". ">
-              <text term="online" prefix="[" suffix="]" text-case="capitalize-first"/>
-              <group delimiter=": ">
-                <text term="available at" text-case="capitalize-first"/>
-                <text variable="URL"/>
-              </group>
-              <group prefix="[" suffix="]" delimiter=": ">
-                <text term="accessed" text-case="capitalize-first"/>
+            <group delimiter=" ">
+              <text variable="URL"/>
+              <group delimiter=" " prefix="(" suffix=")">
+                <text term="accessed"/>
                 <date variable="accessed">
-                  <date-part name="day" form="numeric-leading-zeros" suffix="-"/>
-                  <date-part name="month" form="short" suffix="-" strip-periods="true"/>
+                  <date-part name="month" form="short" strip-periods="false"/>
+                  <date-part name="day" form="numeric-leading-zeros" prefix=" " suffix=", "/>
                   <date-part name="year" form="long"/>
                 </date>
               </group>
@@ -205,6 +204,23 @@
       <else-if match="any" variable="DOI">
         <text variable="DOI" prefix="doi: "/>
       </else-if>
+      <else>
+        <group delimiter=". ">
+          <group delimiter=": ">
+            <text term="accessed" text-case="capitalize-first"/>
+            <date variable="accessed">
+              <date-part name="day" form="numeric-leading-zeros" suffix="-"/>
+              <date-part name="month" form="short" suffix="-" strip-periods="true"/>
+              <date-part name="year" form="long"/>
+            </date>
+          </group>
+          <text term="online" prefix="[" suffix="]" text-case="capitalize-first"/>
+          <group delimiter=": ">
+            <text term="available at" text-case="capitalize-first"/>
+            <text variable="URL"/>
+          </group>
+        </group>
+      </else>
     </choose>
   </macro>
   <macro name="page">
@@ -271,14 +287,17 @@
           </group>
         </else-if>
         <else-if type="report">
-          <group delimiter=", ">
-            <text macro="title"/>
-            <text macro="publisher"/>
-            <group delimiter=" ">
-              <text variable="genre"/>
-              <text variable="number"/>
+          <group delimiter=". ">
+            <group delimiter=", ">
+              <text macro="title"/>
+              <text macro="publisher"/>
+              <group delimiter=" ">
+                <text variable="genre"/>
+                <text variable="number"/>
+              </group>
+              <text macro="issued"/>
             </group>
-            <text macro="issued"/>
+            <text macro="access"/>
           </group>
         </else-if>
         <else-if type="thesis">