Fix the usage of name one inside of input_many

`name_one` inputs (both bootstrap and jquery_ui versions) don't work inside an input_many. 
It looks like they are incompatible with the clone(true) method. Using clone() fixes the issue. 

The "true" option enables the cloning of events. I have tested this solution a bit and I haven't found any problem.

References:
  - http://jsfiddle.net/aJdn8/  (you can play with true and false and see the result)
  - http://stackoverflow.com/questions/13664020/jquery-autocomplete-and-clone