SOC-3556 Show "The target block ID to update is not found : UIComposer" when switch view mode with  User Activity Stream Portlet

Fix description: only add trigger or find element LinkExtensionContainer when UIComposer.clickOn is null and UIComposer.clickOn doesn't have class uidocactivitycomposer.
SOC-3529 | [Feature Unified Search] Search connector doesnt work properly with japanese data

Fix description: replace the "" by "%", escape html the search term then convert it and the jcr node to upper case.
Merge commit '60c0fa1e1cafbb9dca34aa57bf15247f0781d841' into HEAD