[#4723] ticket:487 replaced first matches
[#4723] ticket:487 added check to reply form
[#4723] ticket:487 removed anon check in members.html
[#4723] ticket:487 author.url anon check
[#4723] ticket:487 fix error in template syntax
[#4723] ticket:487 fixed one more error in template syntax
[#4723] ticket:500 rename user_link macro to email_link
[#4723] ticket:500 add user_link macro and use it instead of direct check in templates
[#4723] ticket:500 add fix errors to pass tests
[#4723] ticket:500 fixed templates errors
[#4723] ticket:500 fixed test_blank_user
[#4723] ticket:500 Minor code style fix
[#4723] Restore nobody in ticket header

Also remove unnecessary  kwargs in macro calls.

Signed-off-by: Tim Van Steenburgh <tvansteenburgh@gmail.com>