Increase ticker length to accomodate SHELL.AS (#54).

[kocielnik]

With current RegEx, hyphens are not filtered out.

SHELL.AS is not available in MSN Money (our current main data source).

If it ever becomes available, with this source or another, this change will enable the search box to accept it and pass it on.

[x] Run the site and test, despite this change looking simple.

[mrhappyasthma]

Thanks for the fix!

[mrhappyasthma]

I'll deploy the change later whenever I get some extra time. Since the ticker isn't available on MSN Money I assume it's not particularly urgent.

[benninkcorien]

Not urgent at all. I've figured something else out for .AS tickers. Feel free to ignore and close this :)