[ticket/12039] Add config:* to the command line interface tool

PHPBB3-12039
[ticket/12039] Use an abstract class and some more minor adjustments

PHPBB3-12039
[ticket/12039] Fix option descriptions

PHPBB3-12039
[ticket/12039] Remove debug code

PHPBB3-12039
[ticket/12030] Include config directory completly in update packages

When one of the config files was updated, we need to include all config files
because they are referenced relative from the files themselves.

PHPBB3-12030
[ticket/12030] Include adm/images/ when the css file was updated

The images are referenced relative from the admin.css file.
So when it was updated and the images where not, the updater will be without
images, unless we ensure that they are included in the update-package.

PHPBB3-12021
PHPBB3-12030
[ticket/12030] Fix wrong file and directory names

PHPBB3-12030
[ticket/12039] Update command descriptions

PHPBB3-12039
[ticket/12030] Fix some spelling issues

PHPBB3-12030
[ticket/12039] Do not colour returned value in get command

PHPBB3-12039
[ticket/12039] Do not print success message when config did not exist

PHPBB3-12039
[ticket/12039] Allow getting the value without a new line at the end

PHPBB3-12039
Merge pull request #1936 from nickvergessen/ticket/12030

[Ticket/12030] Include some directories completly in update packages
Merge pull request #1893 from nickvergessen/ticket/12039

[ticket/12039] Add config:* to the command line interface tool

* nickvergessen/ticket/12039:
  [ticket/12039] Allow getting the value without a new line at the end
  [ticket/12039] Do not print success message when config did not exist
  [ticket/12039] Do not colour returned value in get command
  [ticket/12039] Update command descriptions
  [ticket/12039] Remove debug code
  [ticket/12039] Fix option descriptions
  [ticket/12039] Use an abstract class and some more minor adjustments
  [ticket/12039] Add config:* to the command line interface tool