[IMP] make the statements views editable=top by default

And add an icon to allow users to navigate to the statement lines.
Currently it's not possible to open the statement form view. When editing the
view an error occurs, related with the recomputation of running balances.

account_statement_base/views/account_bank_statement.xml

@@ -96,4 +96,23 @@
          <field name="view_mode">tree,form,pivot,graph</field>
     </record>
 
+    <record id="view_bank_statement_tree" model="ir.ui.view">
+        <field name="name">account.bank.statement.tree</field>
+        <field name="model">account.bank.statement</field>
+        <field name="inherit_id" ref="account.view_bank_statement_tree" />
+        <field name="arch" type="xml">
+            <tree position="attributes">
+                <attribute name="editable">bottom</attribute>
+            </tree>
+            <field name="balance_end_real" position="after">
+                <button
+                    name="action_open_statement_lines"
+                    type="object"
+                    title="Open Statement Lines"
+                    icon="fa-folder-open-o"
+                />
+            </field>
+        </field>
+    </record>
+
 </odoo>