further updates for websites and paper-conference Update ieee.csl (JabRef#4646)

Author: POBrien333

ieee.csl

@@ -80,16 +80,22 @@
           <date-part name="year" form="long"/>
         </date>
       </if>
-      <else-if type="bill book chapter graphic legal_case legislation motion_picture paper-conference song thesis" match="any">
+      <else-if type="bill book chapter graphic legal_case legislation motion_picture song thesis" match="any">
         <date variable="issued">
           <date-part name="year" form="long"/>
         </date>
       </else-if>
+      <else-if type="paper-conference" match="any">
+        <date variable="issued">
+          <date-part name="month" form="short"/>
+          <date-part name="year" prefix=" "/>
+        </date>
+      </else-if>
       <else>
         <date variable="issued">
-          <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-part name="month" form="short" suffix=" "/>
+          <date-part name="day" form="numeric-leading-zeros" suffix=", "/>
+          <date-part name="year"/>
         </date>
       </else>
     </choose>
@@ -209,9 +215,9 @@
           <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-part name="month" form="short" suffix=" "/>
+              <date-part name="day" form="numeric-leading-zeros" suffix=", "/>
+              <date-part name="year"/>
             </date>
           </group>
           <text term="online" prefix="[" suffix="]" text-case="capitalize-first"/>