Trim leading and trailing white space from rendered text when looking…

[AutomatedTester]

… for link text

This allows WebDriver users to do

driver.find_element(By.LINK_TEXT "a link with a trailing space")

and have it return back

<a href=#>a link with a trailing space </a>

[andreastt]

LGTM.

[andreastt]

@AutomatedTester Should we also do this for partial link text selectors?

[njasm]

Hi, it make's sense to me.

[AutomatedTester]

@AutomatedTester Should we also do this for partial link text selectors?

Since we are essentially doing indexOf I dont think we really need it there.