GitLab

 - There's new section Kea Libraries

 - using const_pointer_cast in dhcp{4,6}/json_config_parser.cc
 - removed obsolete comment from dhcp_parsers_unittest.cc
 - updated simple_parser.h comments
 - added include <vector> in simple_parser.h

# Conflicts:
#	src/bin/dhcp4/Makefile.am
#	src/bin/dhcp4/json_config_parser.cc
#	src/bin/dhcp6/Makefile.am
#	src/bin/dhcp6/dhcp6.dox
#	src/bin/dhcp6/json_config_parser.cc
#	src/bin/dhcp6/tests/Makefile.am

    Merge branch 'trac3238'

 - address_family_, default ctor removed from two parsers
 - copyright year updated
 - Element::getNonConst is now documented
 - user's guide is now clear about csv-format default value is now true

# Conflicts:
#	doc/examples/kea4/classify.json

 - removed "Linux" from advanced.json
 - corrected one typo

 - removed almost redundant functions
 - added comments

 - added doc/examples/kea4/advanced.json
 - unit-tests now remove comments before passing to legacy JSON parser

This reverts commit bc6502b3.