Move user data to ~/.config/onlylegs location

Update location of default themes folder

gallery/themes/default/ui/wrappers/error.sass

@@ -0,0 +1,35 @@
+.error-wrapper
+    display: flex
+    flex-direction: column
+    justify-content: center
+    align-items: center
+
+    background-color: $black
+
+    h1
+        margin: 0 2rem
+        
+        font-size: 6.9rem
+        font-weight: 900
+        text-align: center
+
+        color: $primary
+
+    p
+        margin: 0 2rem
+
+        max-width: 40rem
+        font-size: 1.25rem
+        font-weight: 400
+        text-align: center
+
+        color: $white
+
+@media (max-width: $breakpoint)
+    .error-wrapper
+        h1
+            font-size: 4.5rem
+
+        p
+            max-width: 100%
+            font-size: 1rem