Comments correction

In order to generate with phpdocumentor a good doc,
the params of the functions updatePassword and getByLoginPassword must have the same name in the comments and in the implementation.
Actually, doc will be generate with 3 params instead of 2.
Soap : get non-scalar params from client

Some soap clients may pass arrays or objects to the soap server. The trim() function used by jRequest converts scalars objects into empty value. We test the scalar type before the empty test, and we use the empty() function only with scalar types.