sparkline and leaflet managed as rails assets dependencies

Gemfile

@@ -47,7 +47,7 @@ gem 'actionview-encoded_mail_to'
 gem 'differ'
 
 # A generic library to administrate the tool
-gem 'activeadmin', github: 'activeadmin'
+gem 'activeadmin'
 
 # Markdown display
 gem 'kramdown'
@@ -103,10 +103,10 @@ group :development, :test do
   gem 'sqlite3'
 end
 
-# Use SASS for stylesheets
-gem 'sass-rails'
-
 group :development, :test, :assets do
+  # Use SASS for stylesheets
+  gem 'sass-rails'
+
   # Use CoffeeScript for .coffee assets and views
   gem 'coffee-rails'
 
@@ -120,14 +120,15 @@ group :development, :test, :assets do
 
   gem 'modernizr-rails'
 
-  gem 'jquery-sparkline-rails', github: 'cubus/jquery-sparkline-rails'
-
   # A superb font to use as icons
   gem 'font-awesome-sass'
 
   # Carte openstreetmap
-  gem 'leaflet-rails'
-  gem 'rails-assets-leaflet.markercluster', source: 'https://rails-assets.org'
+  source 'https://rails-assets.org' do
+    gem 'rails-assets-jquery-sparkline'
+    gem 'rails-assets-leaflet'
+    gem 'rails-assets-leaflet.markercluster'
+  end
 end
 
 group :assets do

Gemfile.lock

@@ -1,29 +1,3 @@
-GIT
-  remote: git://github.com/activeadmin/activeadmin.git
-  revision: 50d9893ea60993ef72047f072e5a4bc0c4d24b45
-  specs:
-    activeadmin (1.0.0)
-      arbre (>= 1.1.1)
-      coffee-rails
-      formtastic (~> 3.1)
-      formtastic_i18n
-      inherited_resources (~> 1.7)
-      jquery-rails
-      jquery-ui-rails
-      kaminari (>= 0.15, < 2.0)
-      railties (>= 4.2, < 5.2)
-      ransack (~> 1.3)
-      sass (~> 3.1)
-      sprockets (< 4.1)
-
-GIT
-  remote: git://github.com/cubus/jquery-sparkline-rails.git
-  revision: c5b531f51e3e734710c7561b06c2c829107f9b38
-  specs:
-    jquery-sparkline-rails (2.1.1)
-      jquery-rails
-      rails (>= 3.2.2)
-
 GIT
   remote: git://github.com/svenfuchs/i18n-active_record.git
   revision: a61b6840b746d303de17f12d35522388c16ad003
@@ -56,6 +30,20 @@ GEM
       rails-html-sanitizer (~> 1.0, >= 1.0.3)
     actionview-encoded_mail_to (1.0.9)
       rails
+    activeadmin (1.0.0)
+      arbre (>= 1.1.1)
+      bourbon
+      coffee-rails
+      formtastic (~> 3.1)
+      formtastic_i18n
+      inherited_resources (~> 1.7)
+      jquery-rails
+      jquery-ui-rails
+      kaminari (>= 0.15, < 2.0)
+      railties (>= 4.2, < 5.2)
+      ransack (~> 1.3)
+      sass-rails
+      sprockets (< 4.1)
     activejob (4.2.9)
       activesupport (= 4.2.9)
       globalid (>= 0.3.0)
@@ -80,6 +68,9 @@ GEM
     arel (6.0.4)
     ast (2.3.0)
     bcrypt (3.1.11)
+    bourbon (4.3.4)
+      sass (~> 3.4)
+      thor (~> 0.19)
     brakeman (3.7.0)
     buftok (0.2.0)
     builder (3.2.3)
@@ -230,8 +221,6 @@ GEM
       kaminari-core (= 1.0.1)
     kaminari-core (1.0.1)
     kramdown (1.14.0)
-    leaflet-rails (1.0.3)
-      rails (>= 4.2.0)
     libv8 (3.16.14.19)
     listen (3.1.5)
       rb-fsevent (~> 0.9, >= 0.9.4)
@@ -300,6 +289,7 @@ GEM
       bundler (>= 1.3.0, < 2.0)
       railties (= 4.2.9)
       sprockets-rails
+    rails-assets-jquery-sparkline (2.1.3)
     rails-assets-leaflet (1.1.0)
     rails-assets-leaflet.markercluster (1.0.6)
       rails-assets-leaflet (>= 1.0.3)
@@ -427,7 +417,7 @@ PLATFORMS
 
 DEPENDENCIES
   actionview-encoded_mail_to
-  activeadmin!
+  activeadmin
   acts-as-taggable-on (< 5)
   brakeman
   bundler-audit
@@ -456,9 +446,7 @@ DEPENDENCIES
   ice_cube
   jbuilder
   jquery-rails
-  jquery-sparkline-rails!
   kramdown
-  leaflet-rails
   meta-tags
   modernizr-rails
   mysql2
@@ -467,6 +455,8 @@ DEPENDENCIES
   quiet_assets
   rack-livereload
   rails
+  rails-assets-jquery-sparkline!
+  rails-assets-leaflet!
   rails-assets-leaflet.markercluster!
   rails-i18n
   sass-rails
@@ -486,4 +476,4 @@ DEPENDENCIES
   webrick
 
 BUNDLED WITH
-   1.13.6
+   1.15.1

app/assets/javascripts/application.js.coffee

@@ -12,7 +12,7 @@
 #
 #= require jquery
 #= require jquery_ujs
-#= require jquery.sparkline
+#= require jquery-sparkline
 # For tags input
 #= require jquery-ui/widgets/autocomplete
 #= require jquery.tagsinput