Call recording encoder/format choice 2/3

PS1: Adds a user option between WB AMR (the default)
     or HE-AAC for the encoding of call recording audio.
     Also changes the output format of the file
     appropriately (WB AMR now uses the WB_AMR output
     format and HE_AAC chooses the MPEG_4 output.
     File extensions are adjust accordingly as well).

PS2: Made recommended changes to the method of determining
     whether or not call recording is enabled and fixed an erroneous
     array name.

PS3: Fixed getting the identifier, now works as intended.
     Altered the default value that the preference setting
     gets in order to show the default, untouched, preference summary


This was in reponse to people complaining the quality of
call recording audio is poor.
It's noticibly better using HE-AAC, but filesizes are larger.

Signed-off-by: dragon <dragon7780@hotmail.nl>