Loading syntax-specific rendering module

Still mocked out for testing

src/syntax/js.js

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+import Render from 'components/Render';
+
+class RenderJS extends Render {}
+
+export default RenderJS;

src/syntax/pcre.js

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+import Render from 'components/Render';
+
+class RenderPCRE extends Render {}
+
+export default RenderPCRE;