Config command created - config show started
Config_show prints out strings,structs,ints,bools

More development for aptly config show
Added map to to_string and tabs to config_show
Config show now outputs a clean data structure
Fixed failing system test

Added config command to aptly main output.
config_show should output pretty json

This commit changes the output of aptly config show to be pretty json
rather than YAML.
Merge branch 'add_config_show_command' of https://github.com/queeno/aptly into queeno-add_config_show_command-2
Style fixes.
A bit more style fixes. #123
Fix misprint. #96
Re-generate man page. #123 #96
Merge branch 'queeno-add_config_show_command-2'
Test for config show. #123