Add PollEv Presenter.app beta

Closes #8043.
Update PhpStorm to 8.0.2
Update Mapbox Studio.app to version 0.2.0
Merge pull request #8053 from vinkla/mapbox-studio

Update Mapbox Studio.app to version 0.2.0
Merge pull request #8047 from okonomi/patch-2

Update PhpStorm to 8.0.2
Merge pull request #8044 from vitorgalvao/fix-8043

Add PollEv Presenter.app beta
Update soulseek to version 2014-11-30

and specify license; add name.
Merge pull request #8059 from ndr-qef/casks-misc

Update soulseek to version 2014-11-30
Upgrade Seil.app to v11.0.0
Merge pull request #8062 from blacksails/seil

Upgrade Seil.app to v11.0.0
Upgrade Phpstorm.app to v8.0.2, added commercial license
Merge branch 'phpstorm802' of github.com:bguse/homebrew-cask into phpstorm802