made tabs work with backbone.js

[fisherwebdev]

In backbone.js I often find myself with location.hash strings that look like "#users/pg/3". I ran into a conflict where the #users tab was throwing an error and not opening if I loaded the page with the hash string already in place. So I hacked the code to only use the first segment of the location.hash string.

Please use this if you want. I realize this was pretty specific to my project, but I thought maybe some other backbone.js people might find this useful.

Perhaps there is a better, more flexible solution to this issue?

thanks for the great library,
Bill

[duclet]

Please make this pull request to dev branch instead.

[alibby251]

Closing - please rebase on the dev branch instead.