Fix the problem with comma and b in russian keybord layout

[AstraSerg]

Hi
I fix the problem listed here
A small side effect appers: tag's text will not breakdown when author press comma key, but display the comma itself. And tags will be splitted by this commas only after submitting the RM issue. This is not very good, but acceptable in my case. Pull my fix if you consider it acceptable too.

Here is how russian layout looks like:

:)

[sdwolfz]

I'm not a fan of this since it implies modifying a 3'rd party library directly in out repo.

I will look into switching to another JavaScript library for tagging. Maybe select2 or taggle.

[marius-balteanu]

@SDWolf, I agree with you, but in this particular case I think that we can accept the PR. The tag-it library seems to be unmaintained (last commit on Nov 18, 2014). For sure, in a next version of the plugin, we can replace the library with a better one (we should discuss about this in other issue).