Lots of tiny message changes.

* Mostly punctuation updates so that the same message is used consistently in all of StatusNet.
* Some cases of "Title Case" removed, because that does not appear to be used consistently.

1 files changed, 1 insertions, 1 deletions

diff --git a/actions/apigroupjoin.php b/actions/apigroupjoin.php
index 4b718bce6..3309d63e7 100644
--- a/actions/apigroupjoin.php
+++ b/actions/apigroupjoin.php
@@ -152,7 +152,7 @@ class ApiGroupJoinAction extends ApiAuthAction
             break;
         default:
             $this->clientError(
-                _('API method not found!'),
+                _('API method not found.'),
                 404,
                 $this->format
             );