[FIX] web,account: client actions layout (height)

Like view manager containers, client action containers needed the
overflow:auto property to compute their correct height inside their
flex context. This also allows client action as the reconcilation in
accounting to not care about their height.

addons/account/static/src/less/account_reconciliation.less

@@ -7,11 +7,6 @@
 // Warning, this value is also specified in the abstractReconciliation widget
 @aestetic_animation_speed: 300ms;
 
-.oe_application .o_reconciliation {
-    height: 100%;
-    overflow: auto;
-}
-
 .o_reconciliation {
     -webkit-user-select: none;
     -moz-user-select: none;

addons/web/static/src/css/base.css

@@ -779,6 +779,7 @@
 }
 .openerp .oe_application .oe_client_action {
   height: 100%;
+  overflow: auto;
   position: relative;
 }
 .openerp .oe-view-manager {

addons/web/static/src/css/base.sass

@@ -749,6 +749,7 @@ $sheet-padding: 16px
 
         .oe_client_action
             height: 100%
+            overflow: auto
             position: relative
     // }}}
     // ViewManager common {{{