Wygwam roxorz, and fine-tune channel-images integration

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Wygwam is great for demanding customers, especially the ones who can't be bothered to learn markdown.

Pro-tip: If you have channels that use multiple wygwam fields and you also use channel-images, then you can turn of channel-images integration for some editors via configuration. Otherwise you'll end up with the channel-images icon on every wygwam-instance. In the advanced settings, select removePlugins and enter the plugins you want removed from this particular editor-configuration