Moving some gems to the assets/dev group

Gemfile

@@ -49,15 +49,9 @@ gem 'differ'
 # A generic library to administrate the tool
 gem 'activeadmin', github: 'activeadmin'
 
-gem 'jquery-sparkline-rails', github: 'cubus/jquery-sparkline-rails'
-
 # Markdown display
 gem 'redcarpet'
 
-# Carte openstreetmap
-gem 'leaflet-rails'
-gem 'rails-assets-leaflet.markercluster', source: 'https://rails-assets.org'
-
 gem 'geocoder'
 
 # Tiny MCE integration
@@ -126,8 +120,14 @@ 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'
 end
 
 group :assets do

Gemfile.lock

@@ -34,7 +34,6 @@ GIT
 
 GEM
   remote: https://rubygems.org/
-  remote: https://rails-assets.org/
   specs:
     actionmailer (4.2.7.1)
       actionpack (= 4.2.7.1)
@@ -453,7 +452,7 @@ DEPENDENCIES
   quiet_assets
   rack-livereload
   rails
-  rails-assets-leaflet.markercluster!
+  rails-assets-leaflet.markercluster
   rails-i18n
   redcarpet
   sass-rails