This saves around 3 MB binary size by not including useless fomantic
files in the build. Also, this allows us to move jQuery into the main
bundle as well which eliminates a few HTTP requests.

Also included are webpack config changes:

- split less and css loaders to speed up compliation
- enable css sourcemaps
- switch css minfier plugin to cssnano-webpack-plugin which works better
  for sourcemaps than the previous plugin

Co-authored-by: techknowlogick <techknowlogick@gitea.io>

* Fix sticky diff stats container

* Use pure CSS sticky instead of Fomantic's JS

* add border color to arc-green

* add slight padding on sides

* make linter happy

Co-authored-by: techknowlogick <techknowlogick@gitea.io>

Co-authored-by: zeripath <art27@cantab.net>
Co-authored-by: techknowlogick <techknowlogick@gitea.io>

Update to [2.8.5](https://github.com/fomantic/Fomantic-UI/releases/tag/2.8.5)
and remove the workaround for the CSS build race condition.

Co-authored-by: techknowlogick <techknowlogick@gitea.io>

Co-authored-by: techknowlogick <techknowlogick@gitea.io>

Fomantic's update process did fail to update via 'npm install' because
of our config initially but it did work after manually bumping the
version in semantic.json.

Fomantic changes:

https://github.com/fomantic/Fomantic-UI/blob/master/CHANGELOG.md#284

Fixes: #9992

* Use npm to manage fomantic

* Only build needed semantic components

* Fix make

* Don't import fonts from google sites since we have loaded

* [misc] devendor fomantic-ui and rebuild upon src or config changes only

Signed-off-by: Jakob Ackermann <das7pad@outlook.com>

* Change sort alphabetically of semantic components

* Fix trailing slash

* fix makefile

* Remove dependency to gulp from package.json

* Fix something

* Simplife the makefile

* add missed fomantic compnent

Co-authored-by: Jakob Ackermann <das7pad@outlook.com>