Fix tests, add applications to eager loading/cache for statuses, fix

application website validation, don't link to app website if website isn't set,
also comment out animated boost icon from #464 until it's consistent with non-animated version

config/locales/en.yml

@@ -8,6 +8,7 @@ en:
     domain_count_after: other instances
     domain_count_before: Connected to
     get_started: Get started
+    learn_more: Learn more
     links: Links
     source_code: Source code
     status_count_after: statuses
@@ -15,7 +16,6 @@ en:
     terms: Terms
     user_count_after: users
     user_count_before: Home to
-    learn_more: Learn more
   accounts:
     follow: Follow
     followers: Followers
@@ -28,6 +28,8 @@ en:
     unfollow: Unfollow
   application_mailer:
     signature: Mastodon notifications from %{instance}
+  applications:
+    invalid_url: The provided URL is invalid
   auth:
     change_password: Change password
     didnt_get_confirmation: Didn't receive confirmation instructions?
@@ -88,9 +90,9 @@ en:
     proceed: Proceed to follow
     prompt: 'You are going to follow:'
   settings:
+    back: Back to Mastodon
     edit_profile: Edit profile
     preferences: Preferences
-    back: Back to Mastodon
   stream_entries:
     click_to_show: Click to show
     favourited: favourited a post by