[FIX] kanban: 180 in Firefox 43+ and Chrome 48+

The kanban CSS applies both a 90 degree rotation and a top-bottom rtl
writing mode to folded kanban group titles. This was initially fine
because browsers didn't support the (SVG) "tb-rl" value for writing-mode
and the property was thus ignored. Firefox 43 (December 2015) and Chrome
48 (January 2016) added support for this value, and thus now end up with
a 180 degree rotation on the title.

Issue #7955 fixed it in 8.0 due to MSIE impact, this is essentially a
backport to 7.0.

close #10687

addons/web_kanban/static/src/css/kanban.css

@@ -162,7 +162,6 @@
   color: #666666;
 }
 .openerp .oe_kanban_view .oe_kanban_group_title_vertical {
-  writing-mode: tb-rl;
   -webkit-transform: rotate(90deg);
   -moz-transform: rotate(90deg);
   -o-transform: rotate(90deg);
@@ -667,7 +666,6 @@
   display: inline-block !important;
 }
 .openerp_ie .oe_kanban_view .oe_kanban_group_title_vertical {
-  -ms-writing-mode: lr-tb !important;
   background: #f0eeee;
 }
 .openerp_ie .oe_kanban_view.oe_kanban_grouped .oe_kanban_group_header {

addons/web_kanban/static/src/css/kanban.sass

@@ -178,7 +178,6 @@
     .oe_kanban_group_title_undefined
         color: #666666
     .oe_kanban_group_title_vertical
-        writing-mode: tb-rl
         -webkit-transform: rotate(90deg)
         -moz-transform: rotate(90deg)
         -o-transform: rotate(90deg)
@@ -552,7 +551,6 @@
     .oe_kanban_group_header.oe_kanban_group_folded .oe_kanban_group_title_vertical
         display: inline-block !important
     .oe_kanban_group_title_vertical
-        -ms-writing-mode: lr-tb !important
         background: rgb(240, 238, 238)
     &.oe_kanban_grouped
         .oe_kanban_group_header