Add credit card logos to allow displaying icons based on brand (#1149)

Co-authored-by: Hinton <oscar@oscarhinton.com>

jslib

@@ -1 +1 @@
-Subproject commit 512c5c283745c0e2aedaa17fc5d386c60d622064
+Subproject commit e9666458c483d4b895e01b241d0207e6047fb00c

src/scss/styles.scss

@@ -13,3 +13,5 @@
 @import "plugins.scss";
 @import "environment.scss";
 @import "header.scss";
+
+@import "../../jslib/angular/src/scss/icons.scss";

src/scss/variables.scss

@@ -1,5 +1,7 @@
 @import "~nord/src/sass/nord.scss";
 
+$dark-icon-themes: 'theme_dark', 'theme_nord';
+
 $font-family-sans-serif: "Open Sans", "Helvetica Neue", Helvetica, Arial, sans-serif;
 $font-family-monospace: Menlo, Monaco, Consolas, "Courier New", monospace;
 $font-size-base: 14px;