merge xml_translate() and html_translate() into one function since

merge xml_translate() and html_translate() into one function since
they do similar things.

Add a small form on top of the html output so request like
http://foo:8088/asterisk/manager will suggest you what to do.

Note: i suspect there is still a bug somewhere in the session matching
code, as sometimes you have to login twice in order for the following
commands to be recognised.

Apart from this, the cli now is basically usable from a web form!

git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@45475 65c4cc65-6c06-0410-ace0-fbb531ad65f3