[FIX] theme_bootswatch, doc: https import for less3

The @import directive in less leave the @import as is if it detects .css
extension. Otherwise it will use the less import.

Since less 3.0.0 less/less.js@77fde7eb7 checking css extension regex
changed from:

/[#\.\&\?\/]css([\?;].*)?$/

to:

/[#\.\&\?]css([\?;].*)?$/

thus all our import of google fonts with URI like:

//fonts.googleapis.com/css?family=FontName

now are getting imported as less, thus they are included directly in the
output file with HTTP scheme URL which may be blocked on HTTPS instance.

With this fix, we specify that the import is a normal CSS one with (css)
import option:

http://lesscss.org/features/#import-atrules-feature-css



opw-2057037
closes #36167

Signed-off-by: Nicolas Lempereur (nle) <nle@odoo.com>

addons/theme_bootswatch/static/src/less/amelia/bootswatch.less

@@ -2,7 +2,7 @@
 // Bootswatch
 // -----------------------------------------------------
 
-@import url("//fonts.googleapis.com/css?family=Lobster|Cabin:400,700");
+@import (css) url("//fonts.googleapis.com/css?family=Lobster|Cabin:400,700");
 
 // Navbar =====================================================================
 

addons/theme_bootswatch/static/src/less/cosmo/bootswatch.less

@@ -2,7 +2,7 @@
 // Bootswatch
 // -----------------------------------------------------
 
-@import url("//fonts.googleapis.com/css?family=Source+Sans+Pro:300,400,700");
+@import (css) url("//fonts.googleapis.com/css?family=Source+Sans+Pro:300,400,700");
 
 // Navbar =====================================================================
 

addons/theme_bootswatch/static/src/less/cyborg/bootswatch.less

@@ -2,7 +2,7 @@
 // Bootswatch
 // -----------------------------------------------------
 
-@import url("//fonts.googleapis.com/css?family=Roboto:400,700");
+@import (css) url("//fonts.googleapis.com/css?family=Roboto:400,700");
 
 // Navbar =====================================================================
 
@@ -161,4 +161,4 @@ a.thumbnail.active {
   h1, h2, h3, h4, h5, h6 {
     color: #fff;
   }
-}
\ No newline at end of file
+}

addons/theme_bootswatch/static/src/less/flatly/bootswatch.less

@@ -2,7 +2,7 @@
 // Bootswatch
 // -----------------------------------------------------
 
-@import url("//fonts.googleapis.com/css?family=Lato:400,700,400italic");
+@import (css) url("//fonts.googleapis.com/css?family=Lato:400,700,400italic");
 
 // Navbar =====================================================================
 

addons/theme_bootswatch/static/src/less/journal/bootswatch.less

@@ -2,7 +2,7 @@
 // Bootswatch
 // -----------------------------------------------------
 
-@import url("//fonts.googleapis.com/css?family=News+Cycle:400,700");
+@import (css) url("//fonts.googleapis.com/css?family=News+Cycle:400,700");
 
 // Navbar =====================================================================
 

addons/theme_bootswatch/static/src/less/readable/bootswatch.less

@@ -2,7 +2,7 @@
 // Bootswatch
 // -----------------------------------------------------
 
-@import url("//fonts.googleapis.com/css?family=Raleway:400,700");
+@import (css) url("//fonts.googleapis.com/css?family=Raleway:400,700");
 
 // Navbar =====================================================================
 

addons/theme_bootswatch/static/src/less/simplex/bootswatch.less

@@ -2,7 +2,7 @@
 // Bootswatch
 // -----------------------------------------------------
 
-@import url("//fonts.googleapis.com/css?family=Open+Sans:400,700");
+@import (css) url("//fonts.googleapis.com/css?family=Open+Sans:400,700");
 
 .btn-shadow(@color) {
   #gradient > .vertical-three-colors(lighten(@color, 3%), @color, 6%, darken(@color, 3%));
@@ -139,4 +139,4 @@ label {
 
 // Progress bars ==============================================================
 
-// Containers =================================================================
\ No newline at end of file
+// Containers =================================================================

addons/theme_bootswatch/static/src/less/spacelab/bootswatch.less

@@ -2,7 +2,7 @@
 // Bootswatch
 // -----------------------------------------------------
 
-@import url("//fonts.googleapis.com/css?family=Open+Sans:400italic,700italic,400,700");
+@import (css) url("//fonts.googleapis.com/css?family=Open+Sans:400italic,700italic,400,700");
 
 .btn-shadow(@color) {
   #gradient > .vertical-three-colors(lighten(@color, 15%), @color, 50%, darken(@color, 4%));
@@ -136,4 +136,4 @@
       color: #fff;
     }
   }
-}
\ No newline at end of file
+}

addons/theme_bootswatch/static/src/less/united/bootswatch.less

@@ -2,7 +2,7 @@
 // Bootswatch
 // -----------------------------------------------------
 
-@import url("//fonts.googleapis.com/css?family=Ubuntu");
+@import (css) url("//fonts.googleapis.com/css?family=Ubuntu");
 
 // Navbar =====================================================================
 
@@ -39,4 +39,4 @@
 
 // Progress bars ==============================================================
 
-// Containers =================================================================
\ No newline at end of file
+// Containers =================================================================

doc/_extensions/odoo_ext/static/variables.less

@@ -79,7 +79,7 @@
 // ===============================================
 
 //== Fonts
-@import url(https://fonts.googleapis.com/css?family=Work+Sans:300,400,500,600,700&subset=latin,latin-ext);
+@import (css) url(https://fonts.googleapis.com/css?family=Work+Sans:300,400,500,600,700&subset=latin,latin-ext);
 
 //== Font sizes/weigths
 @font-size-base : 15px;