Use material design icons

issue474
review60291002

view/work_cycle_form.xml

@@ -11,7 +11,7 @@ this repository contains the full copyright notices and license terms. -->
     <field name="state"/>
     <group col="-1" colspan="2" id="buttons">
         <button name="cancel" icon="tryton-cancel"/>
-        <button name="run" icon="tryton-executable"/>
+        <button name="run" icon="tryton-launch"/>
         <button name="do" icon="tryton-ok"/>
     </group>
 </form>