[FIX] web: fixes some design alignements

- Use 'baseline' to ensure that the priority icon will align to the
  parent's baseline
- Align the favorite icon in dashboards
- Align the statusbar's caret in form views

addons/web/static/src/less/fields.less

@@ -135,7 +135,7 @@
         display: inline-block;
         padding: 0;
         margin: 0;
-        vertical-align: middle;
+        vertical-align: baseline;
         > .o_priority_star {
             display: inline-block;
             font-size: 1.35em;

addons/web/static/src/less/form_view.less

@@ -248,6 +248,10 @@
                         border-left-color: @gray-lighter;
                     }
                 }
+
+                .caret {
+                    margin-top: -2px;
+                }
             }
 
             .o-status-more {

addons/web/static/src/less/kanban_dashboard.less

@@ -223,6 +223,7 @@
     }
 
     .o_favorite {
+        top: 3px;
         left: 0;
         right: auto;
     }