SS3: collections in https://vookmark.co style - faster add to collections

Deleted this works for tabs, and this is a bit identical like add tabs to bookmarks. is not the case if we need to batch links that are all inside a tab (like the example of reddit, when we want to save various post, or when we scroll feedly/facebook, pubmed feed...). about right menu, i reported you that in my opinion you should add a manager to remove all "useless options", by keeping only things that i need. plus i always need to select which collections. a import collection or a remember last used option is much better. so instead of showing me only add to collection in the right click, you need to add even add to import collection (or last used collection). i still think a click like vookmarks is much more faster to a right click and search the correct option.

we need to remember that even select x links and add to collections is not available, like already wrote before