Feature #4057 -- Include more logos

   This commit adds the entire consist of logo images from the
F*Nagios project done by Piotr Ciesielski.  He granted the right
to redistribute the set on 15-Sep-2013 with the following text:

"So to sum up: You can use it in any way You want."

   The F*Nagios set is contained in the subdirectories "equipment",
"other", and "vendors".

   An additional set is provided in the "misc" subdirectory which
contains an older set from Nagios proper and some custom icons that
I created personally from items scoured from the WWW.  I release
my work under the same license as Icinga.

   refs: #4057
classic-ui: moved/renamed/deleted some logos #4057

* all verndor/os logos in one folder
* generic equipment icons in one folder
* vendor specific hardware -> hardware folder
* deleted old/double icons

refs: #4057
classic-ui: add installation of new logos #4057

* also added Changelog entry

refs: #4057
classic ui: Include more logos #4057

   This commit adds the file "Copyright.txt" in the "images"
directory and details the current statte of copyright and licensing
of the various images therein and in the "logos" hierarchy to the
best knowledge of the file's author.

   Credit is given to the individual who created the F*Nagios icon
set and who granted permission for the Icinga Project to redistribute
them freely.

refs: #4057
Merge branch 'feature/include-more-logos-4057' of git.icinga.org:icinga-core into feature/include-more-logos-4057
Merge branch 'feature/include-more-logos-4057' into next

fixes: #4057

Conflicts:
	Changelog