UI: Reduce default buttons letterspacing

ui-ngx/src/app/modules/home/menu/side-menu.component.scss

@@ -47,7 +47,6 @@
       border-bottom: none;
     }
     &.tb-active {
-      font-weight: 500;
       background-color: rgba(255, 255, 255, .15);
     }
     mat-icon {
@@ -63,7 +62,6 @@
       white-space: nowrap;
       display: inline-flex;
       & > span {
-        letter-spacing: .03125em;
         overflow: hidden;
         text-overflow: ellipsis;
       }

ui-ngx/src/theme.scss

@@ -71,7 +71,9 @@ $tb-mat-theme: mat.define-light-theme((
     primary: $tb-primary,
     accent: $tb-accent
   ),
-  typography: mat.define-typography-config(),
+  typography: mat.define-typography-config(
+    $button: mat.define-typography-level(14px, 36px, 500, $letter-spacing: 0.03125em)
+  ),
   density: 0
 ));