Update KKBOX to 5.0.18

- Add license info
Merge pull request #6560 from Gasol/master

Update KKBOX to 5.0.18
remove transitional caveats in keepassx
rename toad-mac.rb to toad.rb

per the naming conventions
license :oss in anonym
license :oss in icefloor
license :oss in isteg
license :oss in noobproof
license :oss in pflists
license :oss in waterroof
move growl-fork from macupdate to upstream vendor

aggregators should be avoided when possible
move identify.rb from macupdate to upstream vendor

Aggregators should be avoided when possible.
This vendor url was discoverable from the appcast.
generalize section on Dropbox URLs

and explain why they should be avoided
Merge pull request #6562 from rolandwalker/rename_toad

rename toad-mac.rb to toad.rb
Merge pull request #6561 from rolandwalker/remove_keepassx_caveats

remove transitional caveats in keepassx
Merge pull request #6566 from rolandwalker/doc_personal_hosting

generalize section on Dropbox URLs
remove abandoned skii.rb

* Original homepage (http://www.awesome-studio.tk/) taken over by squatters.
  I get various redirections, including one which generated a malware warning.
* The `url` points to an anonymous cloud.app user.
* The macupdate page referenced as `homepage` points to the same cloud.app
  download.

It seems that nobody is vouching for this binary.  Historical awesome-studio.tk
is also blocked from the Wayback Machine.  We have no information about the
provenance of this app, and should not include it.
Merge pull request #6563 from rolandwalker/hanynet_license_other

license :oss for all hanynet software
Merge pull request #6570 from rolandwalker/remove_skii

remove abandoned skii.rb
comment use of cl.ly url in lightpaper.rb