fix: use body parser limit config with fallback value (#4985)

* permit bodyParserLimitSize configuration

set bodyParserLimitSize by default to 1mb
permit modifications by environment variable

* fix: use bodyparserlimit config with fallback default

Co-authored-by: Nicolas Giard <github@ngpixel.com>

server/master.js

@@ -91,7 +91,7 @@ module.exports = async () => {
   // GraphQL Server
   // ----------------------------------------
 
-  app.use(bodyParser.json({ limit: WIKI.config.bodyParserLimit }))
+  app.use(bodyParser.json({ limit: WIKI.config.bodyParserLimit || '1mb' }))
   await WIKI.servers.startGraphQL()
 
   // ----------------------------------------