Fix IE8 translating strings that contain html tags.

[maxpeterson]

Related to #51

This checks whether the browser (IE8) modifies (capitalises) html tags (e.g. <span>test</span> > <SPAN>test</SPAN>) and if so it uses the browser to modify (capitalise) any tags in the strings used as the translation keys.

This is to replace #127 that I have closed

[gabegorelick]

@rubenv Given the lack of IE testing infrastructure, does it make sense to write a test for this? Or should we just merge this?

[rubenv]

Well, we should at least test the before/after situation on IE8, to make sure it's a valid patch.

[maxpeterson]

Any thoughts on this?

[rubenv]

It probably makes sense to do this (though I'm not sure about performance, but well, IE8...).

Need to test this though (and I haven't had time for it). The good news is that we need to support IE8 in one of the projects I'm coordinating and testing for that starts soon, so it will get on the agenda.

As for the code, the only remark I have is that we might want to move that test (isUpperCaseTags) out of the setStrings method: it only needs to happen once anyway.

Good stuff, I don't see why this can't be merged (apart from the move mentioned in the previous paragraph), but I'll need to test it first. Sorry about this taking so long.

[maxpeterson]

Thanks @rubenv I will move the isUpperCaseTags out of the setStrings. I appreciate that IE8 is probably not your priority.

[rubenv]

Merged, thanks!