i-click fails with html entity present...

Seems like this is an aggressive regex type deal, but having an html entity inlined inside a button causes an acceptance test fail. Doesn't seem to matter what the entity is. It seems a blank space is needed to cause the entity to be ignored.

```
// $i->click('sign-in');

// this fails...

 sign-in

// this fails, variations...
 sign-in
 sign-in

//...and this doesn't...
sign-in
  sign-in
  sign-in
```

No biggie, but was a bit of a surprise trying to figure out why the test failed.

Start by reproducing i->click('sign-in') with the button and HTML entity variations shown in the issue. Trace the WebDriver module's text matching for the click target; done means the acceptance click succeeds when an entity appears inline in the button content.

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