Take manifest out of repo

.gitignore

@@ -2,4 +2,5 @@
 .pytest_cache
 yird/static/*.css
 yird/static/*.js
+manifest.json
 .coverage

manifest.json

@@ -1 +0,0 @@
-{"assets":{"app_css.css":"app_css-a8e857a2075c5754ba39.css","app_css.js":"app_css.e509ac2debe5d5805fa0.js","app_js.js":"app_js.9dc1daad314671a279cc.js"},"publicPath":""}