[hotfix][docs] Temporarily disable liveserve

./build_docs.sh -i previously did not only enable incremental documentation
building while serving the docs, it also enabled a 'liveserve' mode that
automatically reloaded pages in the browser when they changed. This is based
on the 'hawkins' module which is not (yet) compatible with jekyll 4.0 which we
need to (significantly) improve build times.

This disables the liveserve mode and remove the hawkins module until a new
version is available.

docs/Gemfile

@@ -30,6 +30,6 @@ gem 'jekyll-paginate', '1.1.0'
 gem 'liquid-c', '4.0.0' # speed-up site generation
 gem 'sassc', '2.0.1' # speed-up site generation
 
-group :jekyll_plugins do
- gem 'hawkins'
-end
+# group :jekyll_plugins do
+#  gem 'hawkins'
+# end

docs/Gemfile.lock

@@ -13,9 +13,6 @@ GEM
  multipart-post (>= 1.2, < 3)
  ffi (1.11.1)
  forwardable-extended (2.6.0)
- hawkins (2.0.5)
- em-websocket (~> 0.5)
- jekyll (~> 3.1)
  http_parser.rb (0.6.0)
  i18n (0.9.5)
  concurrent-ruby (~> 1.0)
@@ -83,7 +80,6 @@ PLATFORMS
 
 DEPENDENCIES
  addressable (= 2.6.0)
- hawkins
  jekyll (= 3.7.2)
  jekyll-multiple-languages (= 2.0.3)
  jekyll-paginate (= 1.1.0)

docs/build_docs.sh

@@ -64,7 +64,7 @@ while getopts "piez" opt; do
  ;;
  i)
  [[ `${RUBY} -v` =~ 'ruby 1' ]] && echo "Error: building the docs with the incremental option requires at least ruby 2.0" && exit 1
- JEKYLL_CMD="liveserve --baseurl= --watch --incremental"
+ JEKYLL_CMD="serve --baseurl= --watch --incremental"
  ;;
  e)
  JEKYLL_CONFIG="--config _config.yml,_config_dev_en.yml"