prefs: update some descriptions to be more consistent

classes/pref/prefs.php

@@ -52,10 +52,10 @@ class Pref_Prefs extends Handler_Protected {
 			"STRIP_IMAGES" => array(__("Do not embed images in articles"), ""),
 			"STRIP_UNSAFE_TAGS" => array(__("Strip unsafe tags from articles"), __("Strip all but most common HTML tags when reading articles.")),
 			"USER_STYLESHEET" => array(__("Customize stylesheet"), __("Customize CSS stylesheet to your liking")),
-			"USER_TIMEZONE" => array(__("User timezone"), ""),
+			"USER_TIMEZONE" => array(__("Time zone"), ""),
 			"VFEED_GROUP_BY_FEED" => array(__("Group headlines in virtual feeds"), __("Special feeds, labels, and categories are grouped by originating feeds")),
 			"USER_LANGUAGE" => array(__("Language")),
-			"USER_CSS_THEME" => array(__("Select theme"), __("Select one of the available CSS themes"))
+			"USER_CSS_THEME" => array(__("Theme"), __("Select one of the available CSS themes"))
 		);
 	}