Re-enabled Jekyll Admin

(In case I can use it in the future)
[Jekyll Admin is currently bugged out](jekyll/jekyll-admin#706)

Gemfile

@@ -14,11 +14,12 @@ gem "webrick"
 gem "faraday-retry"
 # If you want to use GitHub Pages, remove the "gem "jekyll"" above and
 # uncomment the line below. To upgrade, run `bundle update github-pages`.
- gem "github-pages", group: :jekyll_plugins
+# gem "github-pages", group: :jekyll_plugins
 # If you have any plugins, put them here!
 group :jekyll_plugins do
   gem "jekyll-feed"
-#  gem 'jekyll-admin', "0.9.0"
+  gem 'jekyll-admin', "0.9.0"
+  gem "github-pages"
 end
 
 # Windows and JRuby does not include zoneinfo files, so bundle the tzinfo-data gem

Gemfile.lock

@@ -9,6 +9,7 @@ GEM
       zeitwerk (~> 2.2, >= 2.2.2)
     addressable (2.8.6)
       public_suffix (>= 2.0.2, < 6.0)
+    backports (3.24.1)
     coffee-script (2.4.1)
       coffee-script-source
       execjs
@@ -104,6 +105,10 @@ GEM
       pathutil (~> 0.9)
       rouge (>= 1.7, < 4)
       safe_yaml (~> 1.0)
+    jekyll-admin (0.9.0)
+      jekyll (>= 3.3, < 5.0)
+      sinatra (~> 1.4)
+      sinatra-contrib (~> 1.4)
     jekyll-avatar (0.8.0)
       jekyll (>= 3.0, < 5.0)
     jekyll-coffeescript (1.2.2)
@@ -213,6 +218,7 @@ GEM
       jekyll-feed (~> 0.9)
       jekyll-seo-tag (~> 2.1)
     minitest (5.22.2)
+    multi_json (1.15.0)
     net-http (0.4.1)
       uri
     nokogiri (1.16.2-x64-mingw-ucrt)
@@ -225,6 +231,10 @@ GEM
     public_suffix (5.0.4)
     racc (1.7.3)
     rack (1.6.13)
+    rack-protection (1.5.5)
+      rack
+    rack-test (2.1.0)
+      rack (>= 1.3)
     rb-fsevent (0.11.2)
     rb-inotify (0.10.1)
       ffi (~> 1.0)
@@ -242,9 +252,21 @@ GEM
       faraday (>= 0.17.3, < 3)
     simpleidn (0.2.1)
       unf (~> 0.1.4)
+    sinatra (1.4.8)
+      rack (~> 1.5)
+      rack-protection (~> 1.4)
+      tilt (>= 1.3, < 3)
+    sinatra-contrib (1.4.7)
+      backports (>= 2.0)
+      multi_json
+      rack-protection
+      rack-test
+      sinatra (~> 1.4.0)
+      tilt (>= 1.3, < 3)
     terminal-table (1.8.0)
       unicode-display_width (~> 1.1, >= 1.1.1)
     thread_safe (0.3.6)
+    tilt (2.3.0)
     typhoeus (1.4.1)
       ethon (>= 0.9.0)
     tzinfo (1.2.11)
@@ -266,6 +288,7 @@ PLATFORMS
 DEPENDENCIES
   faraday-retry
   github-pages
+  jekyll-admin (= 0.9.0)
   jekyll-feed
   rack
   tzinfo (~> 1.2)

_config.yml

@@ -56,7 +56,7 @@ sass:
 
 # Build settings
 plugins:
-#  - jekyll-admin
+  - jekyll-admin
   - jekyll-feed
   - github-pages