Fonts rework

- Use system fonts only for text to avoid FOUT
- Move font-awesome to npm/webpack
- Move NotoColorEmoji to web_src
- Remove presumably unneccesary 'PT Sans Narrow'
- Simplify webpack import exclusions

Fixes: #11818
Fixes: #11814

Author: silverwind

.ignore

@@ -1,6 +1,5 @@
 /vendor
 /public/vendor/plugins
-/public/vendor/assets
 /modules/options/bindata.go
 /modules/public/bindata.go
 /modules/templates/bindata.go

package-lock.json

@@ -20,6 +20,7 @@
     "fast-glob": "3.2.2",
     "file-loader": "6.0.0",
     "fomantic-ui": "2.8.6",
+    "font-awesome": "4.7.0",
     "jquery": "3.5.1",
     "jquery.are-you-sure": "1.9.0",
     "less-loader": "6.1.0",