I would like to use IntelliJ Idea 13 (community edition preferably, but I would also like to know if this is only available in the professional edition) instead of WebStorm. The answer (written by a JetBrains official as far as I understand) to this question sound like it is possible, it says (if I understand it right) all the functionality of Idea derivatives like WebStorm is is available in Idea plug-ins. But I still can't find the right plug-in to create static (HTML+CSS+JS code, no Java) web projects. If I try to open a WebStorm project Idea says it doesn't understand "WEB_MODULE" module type. What do I have to I set-up?
As Andrey mentioned, HTML+CSS+JS support is only provided in Idea Ultimate. No additional plugins have to be installed (unless you need Vue.js support or like to use Live Edit - these plugins, along with some others, are not bundled with Idea and have to be installed from the repository (Preferences | Plugins))