We want to track clicks to new AMC menu items
== acceptance criteria
 [[ https://meta.wikimedia.org/wiki/Schema:MobileWebMainMenuClickTracking | Schema ]] has been updated to let analysts determine whether AMC is enabled.
 The schema definition (currently defined in MobileFrontend) is bumped and defined inside Minerva (EventLoggingSchemas)
 Links are added to the main menu, each of the links has a unique event-name, for the following:
- (+) Recent changes
- (+) Special pages
- (+) Community portal
= QA steps
Verify events show for all the newly added items, but also the existing items.
- Main page
- User page/logout
= Developer notes
* MainMenuClickTracking schema ID exists in MobileFrontend. We should move that to Minerva as this is confusing but apart from that all code is in Minerva.
* All the code for communicating with EventLogging lives in Minerva resources/skins.minerva.scripts/menu/schema.js
* 50% of clicks in the main menu are sampled (Per wgMinervaSchemaMainMenuClickTrackingSampleRate)
* Every link inside the MainMenu will be logged provided it has a event-name value (see resources/skins.minerva.scripts/menu/MainMenu.js)