change code editor to codemirror.

public/dracula.json

@@ -1,208 +0,0 @@
-{
-    "base": "vs-dark",
-    "inherit": true,
-    "rules": [
-      {
-        "background": "282a36",
-        "token": ""
-      },
-      {
-        "foreground": "6272a4",
-        "token": "comment"
-      },
-      {
-        "foreground": "f1fa8c",
-        "token": "string"
-      },
-      {
-        "foreground": "bd93f9",
-        "token": "constant.numeric"
-      },
-      {
-        "foreground": "bd93f9",
-        "token": "constant.language"
-      },
-      {
-        "foreground": "bd93f9",
-        "token": "constant.character"
-      },
-      {
-        "foreground": "bd93f9",
-        "token": "constant.other"
-      },
-      {
-        "foreground": "ffb86c",
-        "token": "variable.other.readwrite.instance"
-      },
-      {
-        "foreground": "ff79c6",
-        "token": "constant.character.escaped"
-      },
-      {
-        "foreground": "ff79c6",
-        "token": "constant.character.escape"
-      },
-      {
-        "foreground": "ff79c6",
-        "token": "string source"
-      },
-      {
-        "foreground": "ff79c6",
-        "token": "string source.ruby"
-      },
-      {
-        "foreground": "ff79c6",
-        "token": "keyword"
-      },
-      {
-        "foreground": "ff79c6",
-        "token": "storage"
-      },
-      {
-        "foreground": "8be9fd",
-        "fontStyle": "italic",
-        "token": "storage.type"
-      },
-      {
-        "foreground": "50fa7b",
-        "fontStyle": "underline",
-        "token": "entity.name.class"
-      },
-      {
-        "foreground": "50fa7b",
-        "fontStyle": "italic underline",
-        "token": "entity.other.inherited-class"
-      },
-      {
-        "foreground": "50fa7b",
-        "token": "entity.name.function"
-      },
-      {
-        "foreground": "ffb86c",
-        "fontStyle": "italic",
-        "token": "variable.parameter"
-      },
-      {
-        "foreground": "ff79c6",
-        "token": "entity.name.tag"
-      },
-      {
-        "foreground": "50fa7b",
-        "token": "entity.other.attribute-name"
-      },
-      {
-        "foreground": "8be9fd",
-        "token": "support.function"
-      },
-      {
-        "foreground": "6be5fd",
-        "token": "support.constant"
-      },
-      {
-        "foreground": "66d9ef",
-        "fontStyle": " italic",
-        "token": "support.type"
-      },
-      {
-        "foreground": "66d9ef",
-        "fontStyle": " italic",
-        "token": "support.class"
-      },
-      {
-        "foreground": "f8f8f0",
-        "background": "ff79c6",
-        "token": "invalid"
-      },
-      {
-        "foreground": "f8f8f0",
-        "background": "bd93f9",
-        "token": "invalid.deprecated"
-      },
-      {
-        "foreground": "cfcfc2",
-        "token": "meta.structure.dictionary.json string.quoted.double.json"
-      },
-      {
-        "foreground": "6272a4",
-        "token": "meta.diff"
-      },
-      {
-        "foreground": "6272a4",
-        "token": "meta.diff.header"
-      },
-      {
-        "foreground": "ff79c6",
-        "token": "markup.deleted"
-      },
-      {
-        "foreground": "50fa7b",
-        "token": "markup.inserted"
-      },
-      {
-        "foreground": "e6db74",
-        "token": "markup.changed"
-      },
-      {
-        "foreground": "bd93f9",
-        "token": "constant.numeric.line-number.find-in-files - match"
-      },
-      {
-        "foreground": "e6db74",
-        "token": "entity.name.filename"
-      },
-      {
-        "foreground": "f83333",
-        "token": "message.error"
-      },
-      {
-        "foreground": "eeeeee",
-        "token": "punctuation.definition.string.begin.json - meta.structure.dictionary.value.json"
-      },
-      {
-        "foreground": "eeeeee",
-        "token": "punctuation.definition.string.end.json - meta.structure.dictionary.value.json"
-      },
-      {
-        "foreground": "8be9fd",
-        "token": "meta.structure.dictionary.json string.quoted.double.json"
-      },
-      {
-        "foreground": "f1fa8c",
-        "token": "meta.structure.dictionary.value.json string.quoted.double.json"
-      },
-      {
-        "foreground": "50fa7b",
-        "token": "meta meta meta meta meta meta meta.structure.dictionary.value string"
-      },
-      {
-        "foreground": "ffb86c",
-        "token": "meta meta meta meta meta meta.structure.dictionary.value string"
-      },
-      {
-        "foreground": "ff79c6",
-        "token": "meta meta meta meta meta.structure.dictionary.value string"
-      },
-      {
-        "foreground": "bd93f9",
-        "token": "meta meta meta meta.structure.dictionary.value string"
-      },
-      {
-        "foreground": "50fa7b",
-        "token": "meta meta meta.structure.dictionary.value string"
-      },
-      {
-        "foreground": "ffb86c",
-        "token": "meta meta.structure.dictionary.value string"
-      }
-    ],
-    "colors": {
-      "editor.foreground": "#f8f8f2",
-      "editor.background": "#282a36",
-      "editor.selectionBackground": "#44475a",
-      "editor.lineHighlightBackground": "#44475a",
-      "editorCursor.foreground": "#f8f8f0",
-      "editorWhitespace.foreground": "#3B3A32",
-      "editorIndentGuide.activeBackground": "#9D550FB0",
-      "editor.selectionHighlightBorder": "#222218"
-    }
-  }