Merge pull request #1 from BeDifferential/master

Get updated accounts-entery from BeDifferential
Adding new settings for username and email Insensitive, adding check to signUp to make the username and email insensitive if needed
Adding error.usernameIsEmail to i18n, error text for different languages need check
Adding check to make sure username is not an email address
Adding isStringEmail method to AccountsEntry
Adding case insensitive test to signIn
Changing setting name to usernameToLower and emailToLower, just struggled with insensitive and casesensitive keeping what they ment in my head, i think this is clearer
Adding some consistancy
Merging from account-entry master, fixing merge conflict in signUp.coffee
Merge pull request #101 from bshardi/master

Take Two on Case Sensitive Username and Email - #65