Normalize application descriptions

Author: vrana

src/applications/feed/application/PhabricatorApplicationFeed.php

@@ -7,7 +7,7 @@ public function getBaseURI() {
   }
 
   public function getShortDescription() {
-    return pht('Review activity.');
+    return pht('Review Activity');
   }
 
   public function getIconName() {

src/applications/legalpad/application/PhabricatorApplicationLegalpad.php

@@ -10,7 +10,7 @@ public function getBaseURI() {
   }
 
   public function getShortDescription() {
-    return pht('Legal Documents.');
+    return pht('Legal Documents');
   }
 
   public function getIconName() {