bump rails_admin

Gemfile

@@ -195,7 +195,7 @@ gem "minitest"
 group :production do # we don"t install these on travis to speed up test runs
   # Administration
 
-  gem "rails_admin", "0.7.0"
+  gem "rails_admin", "0.8.1"
 
   # Analytics
 

Gemfile.lock

@@ -97,7 +97,7 @@ GEM
     coffee-script (2.4.1)
       coffee-script-source
       execjs
-    coffee-script-source (1.9.1.1)
+    coffee-script-source (1.10.0)
     compass (1.0.3)
       chunky_png (~> 1.2)
       compass-core (~> 1.0.2)
@@ -320,7 +320,7 @@ GEM
     fog-xml (0.1.2)
       fog-core
       nokogiri (~> 1.5, >= 1.5.11)
-    font-awesome-rails (4.4.0.0)
+    font-awesome-rails (4.5.0.0)
       railties (>= 3.2, < 5.0)
     formatador (0.2.5)
     fuubar (2.0.0)
@@ -586,7 +586,7 @@ GEM
     rails-timeago (2.11.0)
       actionpack (>= 3.1)
       activesupport (>= 3.1)
-    rails_admin (0.7.0)
+    rails_admin (0.8.1)
       builder (~> 3.1)
       coffee-rails (~> 4.0)
       font-awesome-rails (>= 3.0, < 5)
@@ -660,7 +660,7 @@ GEM
     ruby-progressbar (1.7.5)
     rubyzip (1.1.7)
     safe_yaml (1.0.4)
-    sass (3.4.19)
+    sass (3.4.20)
     sass-rails (5.0.4)
       railties (>= 4.0.0, < 5.0)
       sass (~> 3.1)
@@ -866,7 +866,7 @@ DEPENDENCIES
   rails-assets-perfect-scrollbar (= 0.6.8)!
   rails-i18n (= 4.0.8)
   rails-timeago (= 2.11.0)
-  rails_admin (= 0.7.0)
+  rails_admin (= 0.8.1)
   rb-fsevent (= 0.9.6)
   rb-inotify (= 0.9.5)
   redcarpet (= 3.3.3)