don't load styles that we have locally

- Closes #460

lib/constants.js

@@ -14,6 +14,7 @@ export const FONTS = [
   { id: 'Ubuntu Mono', name: 'Ubuntu Mono' }
 ]
 
+const hasStylesheet = false
 export const THEMES = [
   {
     id: '3024-night',
@@ -61,11 +62,13 @@ export const THEMES = [
   },
   {
     id: 'night-owl',
-    name: 'Night Owl'
+    name: 'Night Owl',
+    hasStylesheet
   },
   {
     id: 'nord',
-    name: 'Nord'
+    name: 'Nord',
+    hasStylesheet
   },
   {
     id: 'oceanic-next',
@@ -73,7 +76,8 @@ export const THEMES = [
   },
   {
     id: 'one-dark',
-    name: 'One Dark'
+    name: 'One Dark',
+    hasStylesheet
   },
   {
     id: 'panda-syntax',
@@ -90,12 +94,12 @@ export const THEMES = [
   {
     id: 'solarized dark',
     name: 'Solarized (Dark)',
-    hasStylesheet: false
+    hasStylesheet
   },
   {
     id: 'solarized light',
     name: 'Solarized (Light)',
-    hasStylesheet: false
+    hasStylesheet
   },
   {
     id: 'tomorrow-night-bright',
@@ -107,7 +111,8 @@ export const THEMES = [
   },
   {
     id: 'verminal',
-    name: 'Verminal'
+    name: 'Verminal',
+    hasStylesheet
   },
   {
     id: 'yeti',