Fix broken asset paths in per-game theme CSS (double assets/ prefix)

The per-game theme SCSS compiles to <game>/assets/theme-*.min.css, so a
url('assets/foo') inside it resolves to <game>/assets/assets/foo and 404s
(fortnite already used the correct bare-filename form). This left:
  - destiny / elite / battlefield1: custom @font-face fonts 404ing,
    silently falling back to system fonts
  - rainbow6 (both themes) & battlefield1 (dark): the ESL/Ubisoft/EA/DICE
    group-logo labels blank, since text is hidden via text-indent and the
    logo image failed to load

Drop the redundant assets/ prefix so the bare filename resolves correctly
(verified live: corrected paths return 200 and the r6 logos paint at 50x23).

Note: csgo's blank group labels (fixed separately) are a different bug -
its inlined styles.css uses correct paths, but the labels collapse to
width:0, so that fix forces plain-text labels instead.

Author: oskarrisberg

games/battlefield1/theme-dark.scss

@@ -2,8 +2,8 @@
 
 @font-face {
     font-family: 'Purista';
-    src: url( 'assets/purista-medium.woff2' ) format( 'woff2' ),
-         url( 'assets/purista-medium.woff' ) format( 'woff' );
+    src: url( 'purista-medium.woff2' ) format( 'woff2' ),
+         url( 'purista-medium.woff' ) format( 'woff' );
     font-weight: normal;
     font-style: normal;
     font-display: swap;
@@ -59,13 +59,13 @@ a:active {
 }
 
 .group-label.ea {
-    background-image: url( 'assets/logo-ea.png' );
+    background-image: url( 'logo-ea.png' );
     text-indent: -9999px;
     width: 50px;
 }
 
 .group-label.dice {
-    background-image: url( 'assets/logo-dice.png' );
+    background-image: url( 'logo-dice.png' );
     text-indent: -9999px;
     width: 50px;
 }

games/destiny/theme-dark.scss

@@ -4,8 +4,8 @@
     font-family: 'Destiny';
     font-weight: normal;
     font-style: normal;
-    src: url( 'assets/destiny-font.woff2' ) format( 'woff2' ),
-         url( 'assets/destiny-font.woff' ) format( 'woff' );
+    src: url( 'destiny-font.woff2' ) format( 'woff2' ),
+         url( 'destiny-font.woff' ) format( 'woff' );
     font-display: swap;
 }
 

games/destiny/theme-light.scss

@@ -4,8 +4,8 @@
     font-family: 'Destiny';
     font-weight: normal;
     font-style: normal;
-    src: url( 'assets/destiny-font.woff2' ) format( 'woff2' ),
-         url( 'assets/destiny-font.woff' ) format( 'woff' );
+    src: url( 'destiny-font.woff2' ) format( 'woff2' ),
+         url( 'destiny-font.woff' ) format( 'woff' );
     font-display: swap;
 }
 

games/elite/theme-dark.scss

@@ -4,8 +4,8 @@
     font-family: 'Eurostile';
     font-style: normal;
     font-weight: normal;
-    src: url( 'assets/eurostile.woff2' ) format( 'woff2' ),
-        url( 'assets/eurostile.woff' ) format( 'woff' );
+    src: url( 'eurostile.woff2' ) format( 'woff2' ),
+        url( 'eurostile.woff' ) format( 'woff' );
     font-display: swap;
 }
 

games/elite/theme-light.scss

@@ -4,8 +4,8 @@
     font-family: 'Eurostile';
     font-style: normal;
     font-weight: normal;
-    src: url( 'assets/eurostile.woff2' ) format( 'woff2' ),
-        url( 'assets/eurostile.woff' ) format( 'woff' );
+    src: url( 'eurostile.woff2' ) format( 'woff2' ),
+        url( 'eurostile.woff' ) format( 'woff' );
     font-display: swap;
 }
 

games/rainbow6/theme-dark.scss

@@ -1,13 +1,13 @@
 @import "../../web-assets/theme-dark";
 
 .group-label.esl {
-    background-image: url( 'assets/logo-esl.png' );
+    background-image: url( 'logo-esl.png' );
     text-indent: -9999px;
     width: 50px;
 }
 
 .group-label.ubisoft {
-    background-image: url( 'assets/logo-ubisoft.png' );
+    background-image: url( 'logo-ubisoft.png' );
     text-indent: -9999px;
     width: 50px;
 }

games/rainbow6/theme-light.scss

@@ -1,13 +1,13 @@
 @import "../../web-assets/theme-light";
 
 .group-label.esl {
-    background-image: url( 'assets/logo-esl.png' );
+    background-image: url( 'logo-esl.png' );
     text-indent: -9999px;
     width: 50px;
 }
 
 .group-label.ubisoft {
-    background-image: url( 'assets/logo-ubisoft.png' );
+    background-image: url( 'logo-ubisoft.png' );
     text-indent: -9999px;
     width: 50px;
 }