Zeal dosn't open 

Zeal dosn't open with the shortcut.

Zeal in v3.0 dropped support for `--query`
https://github.com/zealdocs/zeal/releases/tag/v0.3.0

Maybe just drop this line
https://github.com/gdelmas/IntelliJDashPlugin/blob/master/src/de/dreamlab/dash/launcher/ZealLauncher.java#L36

I was unable to compile the plugin in my old Java environment, so I wasn't able to test if this would work.

Kind regards
