Password generators improvements (UI and code)

[interfasys]

Some have a little window that shows the generated password, some don't. It would be nice to have some uniformity.

<input type=button value="|LANG_RANDOM|" onClick="randomPass(); reseller.random.value=reseller.passwd.value"> <input disabled="disabled" type=text name=random value="|LANG_PASS_GENERATED|" size=16>

LANG_PASS_GENERATED would be a new String that shows initially.

Also, the JS needs to be updated so that it can generate passwords in line with the admin's policy.