refs #24114 [finc] move font-variables section nearly at the beginning of _customVariables.scss

* remove _customFonts in finc because of no usage of @font-face
** especial in usage in instances
* simplification of custom variables
** all finc variables now in one file (flat hierarchy)
* improves re-usage of font-variables in instances (in context of unification of scss import order)

themes/finc/scss/_customFonts.scss

-// This file is for all font-related variables incl. line height
-
-// FONTS
-//// Base font size
-$font-size-base: 16px !default;
-//// We use these to define default font stacks
-$font-family-sans-serif: 'Helvetica Neue', Helvetica, Roboto, Arial, sans-serif !default;
-$font-family-serif: Georgia, Cambria, 'Times New Roman', Times, serif !default;
-$font-family-monospace: Consolas, 'Liberation Mono', Courier, monospace !default;
-
-//// SET FONT SIZES using the following pattern! This is the only way, font sizes will be adapted proportionally
-//// font-size: ($font-size-base * 1.5)
-//// OR us the em-calculator function below, like so: font-size: em(14)
-//// There are also the variables $font-size-large and $...small which are calculated
-//// $font-size-base * 1.25 --> ~18px and $font-size-base * 0.85 --> ~12px
-
-$font-size-breadcrumbs: ($font-size-base * .85) !default;
-
-// Default line height
-$line-height-base: 1.5 !default;

themes/finc/scss/_customVariables.scss

@@ -11,7 +11,6 @@
 // @import '../../bootstrap3/scss/vendor/bootstrap/variables';
 @import '../../bootstrap3/scss/vendor/font-awesome/variables';
 @import 'components/functions';
-@import 'customFonts';
 
 
 // *****************************************************************
@@ -70,6 +69,36 @@ $pagination-disabled-color: $default-disabled-color !default;
 
 
 
+// *****************************************************************
+// **** A3 **** Font-related settings ******************************
+// *****************************************************************
+
+//
+// FONT variables here
+// but definitions and imports of new fonts via @font-face exclusively in _customFonts.scss
+//
+
+//// Base font size
+$font-size-base: 16px !default;
+//// We use these to define default font stacks
+$font-family-sans-serif: 'Helvetica Neue', Helvetica, Roboto, Arial, sans-serif !default;
+$font-family-serif: Georgia, Cambria, 'Times New Roman', Times, serif !default;
+$font-family-monospace: Consolas, 'Liberation Mono', Courier, monospace !default;
+
+//// SET FONT SIZES using the following pattern! This is the only way, font sizes will be adapted proportionally
+//// font-size: ($font-size-base * 1.5)
+//// OR us the em-calculator function below, like so: font-size: em(14)
+//// There are also the variables $font-size-large and $...small which are calculated
+//// $font-size-base * 1.25 --> ~18px and $font-size-base * 0.85 --> ~12px
+
+$font-size-breadcrumbs: ($font-size-base * .85) !default;
+
+// Default line height
+$line-height-base: 1.5 !default;
+
+
+
+
 // *****************************************************************
 // **** A5 **** General dimensions *********************************
 // *****************************************************************