Update bootstrap-sass dependency to version 1.4.0

Gemfile.lock

@@ -1,16 +1,16 @@
 GIT
   remote: git://github.com/sferik/rails_admin.git
-  revision: 84e17c301db00e296605d6abd11a419b4e46324a
+  revision: e99d7f8e9002ae7c6b4dddb962174e76f8663400
   specs:
     rails_admin (0.0.1)
-      bootstrap-sass (~> 1.3, >= 1.3.1)
+      bootstrap-sass (~> 1.4)
       builder (~> 3.0)
       coffee-rails (~> 3.1)
       haml (~> 3.1)
-      jquery-rails (~> 1.0)
+      jquery-rails (= 1.0.16)
       kaminari (~> 0.12.4)
       rails (~> 3.1)
-      remotipart (~> 1.0)
+      remotipart (= 1.0)
 
 GEM
   remote: http://rubygems.org/
@@ -47,7 +47,7 @@ GEM
     arel (2.2.1)
     bcrypt-ruby (3.0.1)
     bcrypt-ruby (3.0.1-java)
-    bootstrap-sass (1.3.2)
+    bootstrap-sass (1.4.0)
       sass-rails (~> 3.1.0)
     bouncy-castle-java (1.5.0146.1)
     builder (3.0.0)