Added the email field type to resolve gh-283. Fixed the CSS inclution error to resolve gh-278. Added the option to add sql_uninstall dump value to a component. Did some class formating on the compiler.

admin/sql/uninstall.mysql.utf8.sql

@@ -29,3 +29,4 @@ DROP TABLE IF EXISTS `#__componentbuilder_component_files_folders`;
 DROP TABLE IF EXISTS `#__componentbuilder_snippet_type`;
 DROP TABLE IF EXISTS `#__componentbuilder_library_config`;
 DROP TABLE IF EXISTS `#__componentbuilder_library_files_folders_urls`;
+DROP TABLE IF EXISTS `#__componentbuilder_external_code`;