Add searchable flag to langauge

lib/linguist/languages.yml

@@ -4,6 +4,7 @@
 # aliases     - An Array of additional aliases (implicitly
 #               includes name.downcase)
 # ext         - An Array of associated extensions
+# searchable  - Boolean flag to enable searching (defaults to true)
 # search_term - Deprecated: Some langauges maybe indexed under a
 #               different alias. Avoid defining new exceptions.
 
@@ -204,6 +205,7 @@ Gentoo Eclass:
   - .eclass
 Gettext Catalog:
   :search_term: pot
+  :searchable: false
   :aliases:
   - pot
   :ext:
@@ -457,6 +459,7 @@ Ruby:
   - .thor
   - Gemfile
 SQL:
+  :searchable: false
   :ext:
   - .sql
 Sass: