Tweak applicationmap and featuregroup config containers.

* Change applicationmap and featuregroup to replace duplicate config items
rather than reject them.

* Remove some unneeded warning messages when getting the applicationmap
allows duplicates from DYNAMIC_FEATURES.


git-svn-id: http://svn.asterisk.org/svn/asterisk/trunk@390803 f38db490-d61c-443f-a65b-d21fe96a405b
Refactor chan_dahdi/sig_analog/sig_pri and chan_misdn to use the common transfer functions.

(closes issue ASTERISK-21523)
Reported by: Matt Jordan

(closes issue ASTERISK-21524)
Reported by: Matt Jordan

Review: https://reviewboard.asterisk.org/r/2600/


git-svn-id: http://svn.asterisk.org/svn/asterisk/trunk@390804 f38db490-d61c-443f-a65b-d21fe96a405b