Hack to make sure that imports don't define tags

Currently, `import Html` will make vim jump to the import statement
instead of the Html module. This hack will make sure that the tag
generated in the import statement doesn't get jumped to.

ftplugin/elm/ctags/elm.cnf

@@ -7,5 +7,5 @@
 --regex-Elm=/^type alias *([A-Z][a-zA-Z0-9_-]*)/\1/t,type,Declared types/
 --regex-Elm=/[ \r\n\t][\|=][ \r\n\t]*([A-Z][a-zA-Z0-9_-]*)(.*)/\1/C,constructor,constructors created by types/
 --regex-Elm=/^module *([A-Z][.a-zA-Z0-9_-]*)/\1/m,module,module definitions/
---regex-Elm=/^import *([A-Z][.a-zA-Z0-9_-]*)(.*as *([A-Z][.a-zA-Z0-9_-]*))?/\1/i,import,imported modules/
+--regex-Elm=/^import *([A-Z][.a-zA-Z0-9_-]*)(.*as *([A-Z][.a-zA-Z0-9_-]*))?/\1 ()/i,import,imported modules/