The sensiblesettings setting has been moved from tool_admin_presets
to adminpresets component where it belongs, in order for being able
to use it from the API to decide whether sensible settings should
be included when exporting them.
A new component has been created, core_adminpresets, and tables and some
API methods from this tool have been moved there, so it can spread over
other plugins.
Currently, the tool_admin_presets plugin only provides the UI to interact
with the core adminpresets stuff.
