[REF] theme_bootswatch: update current themes to bootstrap v4.1.3

Note 1: unsupported themes were already removed in a previous commit.
Note 2: we should maybe add the new themes.

Author: qsm-odoo

addons/theme_bootswatch/static/lib/bootswatch/cerulean/_bootswatch.scss

@@ -1,130 +1,99 @@
-// Cerulean 3.3.7
+// Cerulean 4.1.3
 // Bootswatch
-// -----------------------------------------------------
+
 
 @mixin btn-shadow($color){
-  @include gradient-vertical-three-colors(lighten($color, 8%), $color, 60%, darken($color, 4%));
-  filter: none;
-  border-bottom: 1px solid darken($color, 10%);
+  @include gradient-y-three-colors(lighten($color, 8%), $color, 60%, darken($color, 4%));
 }
 
-// Navbar =====================================================================
-
-.navbar {
-  &-default {
-    @include btn-shadow($navbar-default-bg);
-    filter: none;
-    @include box-shadow(0 1px 10px rgba(0, 0, 0, 0.1));
-
-    .badge {
-      background-color: #fff;
-      color: $navbar-default-bg;
-    }
-  }
-
-  &-inverse {
-    @include gradient-vertical-three-colors(lighten($navbar-inverse-bg, 8%), lighten($navbar-inverse-bg, 4%), 60%, darken($navbar-inverse-bg, 2%));
-    filter: none;
-    border-bottom: 1px solid darken($navbar-inverse-bg, 10%);
+$text-shadow: 0 1px 0 rgba(0, 0, 0, 0.05) !default;
 
-    .badge {
-      background-color: #fff;
-      color: $navbar-inverse-bg;
-    }
-  }
+// Navbar ======================================================================
 
-  .navbar-nav > li > a,
-  &-brand {
-    text-shadow: 0 1px 0 rgba(0, 0, 0, 0.1);
-  }
+.bg-primary {
+  @include btn-shadow($primary);
 }
 
-@media (max-width: $grid-float-breakpoint-max) {
-
-  .navbar {
-
-    .dropdown-header {
-      color: #fff;
-    }
-
-    .dropdown-menu {
-      a {
-        color: #fff;
-      }
-    }
-  }
+.bg-dark {
+  @include btn-shadow($blue);
 }
 
-// Buttons ====================================================================
-
-.btn {
-
-  text-shadow: 0 1px 0 rgba(0, 0, 0, 0.1);
-
-  .caret {
-    border-top-color: #fff;
-  }
+.bg-light {
+  @include gradient-y-three-colors(lighten($gray-200, 8%), $gray-200, 60%, darken($gray-200, 2%));
 }
 
-.btn-default {
-  
-  @include btn-shadow($btn-default-bg);
+.navbar-brand,
+.nav-link {
+  text-shadow: $text-shadow
+}
 
-  &:hover {
-    color: $btn-default-color;
-  }
+// Buttons =====================================================================
 
-  .caret {
-    border-top-color: $text-color;
-  }
+.btn {
+  text-shadow: $text-shadow
 }
 
-.btn-default {
-  @include btn-shadow($btn-default-bg);
+.btn-primary {
+  @include btn-shadow($primary);
 }
 
-.btn-primary {
-  @include btn-shadow($btn-primary-bg);
+.btn-secondary {
+  @include btn-shadow($secondary);
+  color: $gray-700;
 }
 
 .btn-success {
-  @include btn-shadow($btn-success-bg);
+  @include btn-shadow($success);
 }
 
 .btn-info {
-  @include btn-shadow($btn-info-bg);
+  @include btn-shadow($info);
 }
 
 .btn-warning {
-  @include btn-shadow($btn-warning-bg);
+  @include btn-shadow($warning);
 }
 
 .btn-danger {
-  @include btn-shadow($btn-danger-bg);
+  @include btn-shadow($danger);
 }
 
-// Typography =================================================================
+.btn-light {
+  @include btn-shadow($light);
+}
 
-// Tables =====================================================================
+.btn-dark {
+  @include btn-shadow($dark);
+}
 
-// Forms ======================================================================
 
-// Navs =======================================================================
+// Typography ==================================================================
 
-// Indicators =================================================================
+.bg-primary,
+.bg-success,
+.bg-info,
+.bg-warning,
+.bg-danger,
+.bg-dark {
+  h1, h2, h3, h4, h5, h6 {
+    color: $white;
+  }
+}
 
-// Progress bars ==============================================================
+// Tables ======================================================================
 
-// Containers =================================================================
+// Forms =======================================================================
 
-.panel-primary,
-.panel-success,
-.panel-warning,
-.panel-danger,
-.panel-info {
+// Navs ========================================================================
 
-  .panel-heading,
-  .panel-title {
-    color: #fff;
+.dropdown-menu {
+  .dropdown-header {
+    color: $gray-600;
   }
 }
+
+// Indicators ==================================================================
+
+// Progress bars ===============================================================
+
+// Containers ==================================================================