[xwiki-devs] [Proposal] Add a new perSpace property to the XWiki.ConfigurableClass class

Hello devs, Since Nested Spaces has been introduced in XWiki, the need of configuring some applications at space level has also appeared. There are already some configurable sections at space level: Look & Feel (Presentation, Page Elements, PanelWizard), Users & Groups (Rights: Page & Children, Rights: Page) but they are not using the configurable class and they are defined in https://github.com/xwiki/xwiki-platform/blob/master/xwiki-platform-core/xwi… having perSpace key. The new installed applications that have a configuration page, can't be configured now at space level and what I'm proposing in order to ease the way this can be achieved is to add a new boolean property perSpace to the XWiki.ConfigurableClass class. Another idea would be to create a mix between this non-existing property and existing configureGlobally property and to create a new one with some options: Wiki, Wiki & space, Space but this involves a lot of changes tha might not worth the effort. WDYT? Thanks, Alex