Two new feature flags:
1) MinervaPersonalMenu
2) MinervaAdvancedMainMenu
Changes:
* AMC defaults to false on desktop - desktop doesn't have AMC mode it just
enables several skin options.
* WHen inserting a link at the bottom of the page check whether the talk at top
of the page (tabs) is enabled.. not AMC
* Update ServiceWiring to construct menu based on MinervaAdvancedMainMenu
and MinervaPersonalMenu - note when former is enabled but not latter there is
no way to logout. Noted in README.
* Use one entry point for skins.minerva.amc.styles/index.less
* Document files inside skins.minerva.amc.styles to make it clear which features
they are associated with
* Drop history page styles when AMC is disabled - it's not possible to ever get to
these as the history page redirects in non-AMC mode
* Rename the class .minerva--amc-enabled to minerva--history-page-action-enabled
to reflect its real purpose and move styles from skins.minerva.base.styles to skins.minerva.amc.styles
No need to worry about cached HTML as AMC runs without cache...
* Remove isAnyAMCOptionEnabled - it's an antipattern and should be discouraged as it discourages the
art of feature flagging. Nothing is using it after these changes.
* The AMC_MODE flag is disabled. There is no need for this - AMC is not a feature and therefore not a
skin option. It is a mechanism for turning on other skin options. Tests are updated.
Testing:
It should now be possible to enable any feature in `beta` and see it in the beta of the
site.
Bug: T229295
Change-Id: I48959905f5c09721b14a27aa1a5ad82849ac6263
