DSL: add `tags` stanza

only limited/defined keys are permitted
 - :vendor
 - :font_pitch
 - :font_serif
 - :font_weight
 - :font_slant

forward-compatibility: no associated functionality is
provided.  Intentionally left undocumented.

References: #4688
Changes Dir.home -> File.expand_path('~')

Dir.home is not available on ruby 1.8.7 i.e.
versions of OSX before Mavericks
Updated OSX Fuse to Version 2.7

also cleaned up cask-file
Merge pull request #5223 from fharbe/osxfuse

Updated OSX Fuse to Version 2.7
Upgrade Hydra to 1.0 beta 8.

New upstream release.
Merge pull request #5225 from cmsj/hydra-1.0b8

Upgrade Hydra to 1.0 beta 8.
Update shasum for Vuescan
Merge pull request #5226 from gsong/george/vuescan-update

Update shasum for Vuescan
Update Boot2Docker to v1.1.0.
Merge pull request #5228 from Aigeruth/update/boot2docker

Update Boot2Docker to v1.1.0.
Upgraded ClamXav to 2.6.4
Merge pull request #5229 from designorant/ClamXav-2.6.4

Upgraded ClamXav to 2.6.4
Upgrade kdiff3 to 0.9.98
Add moneyplex

German homebanking software. Free Version.
Merge pull request #5232 from vitorgalvao/fix-5230

Add moneyplex
Add Mail Plugin Manager v2.0.6
Unetbootin added valid url

the last unetbootin Cask had an invalid url and no installabel file was downloaded
Merge pull request #5222 from mindriot101/fix-xquartz-install-on-1.8.7

Changes Dir.home -> File.expand_path('~')
Merge pull request #5233 from hugoh/mail-plugin-manager

Add Mail Plugin Manager v2.0.6
Merge pull request #5234 from stonerl/unetbootin

Unetbootin added valid url