Spell Check fails with html tags containing spelling errors

[nobkins]

This is similar to ticket 339. If a tag such as an img tag has spelleing error then the spell check fails.

eg. <img src='image.gif' alt='spelin eror'>

The spell check fails because it finds 'spelling eror' which breaks the html code. I think this could be fixed to use a regular expression to check if the word being checked was inside a html tag but my javascript skills are not up to the task. The solution in ticket 339 does not fix the problem.

[fredck]

DUP of #339.

Even if the proposed fix at #339 does not work for you, please add your comments there, so we can centralize the problem in a single place.