revert 3.3.11+ changes

[fritzmg]

Releases 3.3.11 and 3.3.12 were broken due to

• missing minified JavaScripts
• newly added dependency to the dc-general, without adding the requirement to the composer.json

and thus they are unusable.

However, even tough 3.3.13 was released with the added dc-general dependency, most users will only get 3.3.12 and not higher, since there is no stable release for dc-general 2.x. This will leave many users with either broken multicolumwizard fields or even completely broken installations once they update their packages.

[discordier]

The dependency should have never been added.
It should become a weak dependency and therefore be added to the suggests section instead.

The event listener must of course get updated along.

[zonky2]

@stefanheimes

This should solve a problem with the fileTree Widget or the pageTree widget.
747bdc7#commitcomment-24806245

... welches Problem sollte denn gelöst werden?

[fritzmg]

@zonky2 #215

[Toflar]

Sorry but could anybody fix the releases soon? The MCW is used in so many extensions out there, please be careful when you release a new version! Right now, the minified JS is broken and I have to pin the dependency to 3.3.10 in all projects. And why the fuck is dc-general a dependency?

[discordier]

See #240