Use material design icons

issue474
review60291002

complaint.py

@@ -103,7 +103,7 @@ class Complaint(Workflow, ModelSQL, ModelView):
                     'invisible': ~Eval('state').in_(
                         ['waiting', 'done', 'cancelled']),
                     'icon': If(Eval('state').in_(['done', 'cancelled']),
-                        'tryton-clear', 'tryton-go-previous'),
+                        'tryton-undo', 'tryton-back'),
                     'depends': ['state'],
                     },
                 'wait': {

view/complaint_form.xml

@@ -31,10 +31,10 @@ this repository contains the full copyright notices and license terms. -->
             <group col="-1" colspan="2" id="buttons">
                 <button name="cancel" icon="tryton-cancel"/>
                 <button name="draft"/>
-                <button name="wait" icon="tryton-go-next"/>
-                <button name="approve" icon="tryton-go-next"/>
+                <button name="wait" icon="tryton-forward"/>
+                <button name="approve" icon="tryton-forward"/>
                 <button name="reject" icon="tryton-close"/>
-                <button name="process" icon="tryton-executable"/>
+                <button name="process" icon="tryton-launch"/>
             </group>
         </page>
     </notebook>