Remove become_samrat_chakravartin decision in PB+SWMH

Cleans up error.log and who knows what else, as all of its direct
title scoping to titles that don't exist in SWMH confuses the crap
out of the parser.

Override should be removed if/when SWMH features these titles or
provinces that actually cover this concept.
Bookmarks in chronological order
Notes in first 3 bookmarks pointing users to preferred, balanced one
Changelog updates aplenty
Merge pull request #193 from zijistark/alpha

Chronological bookmarks, PB+SWMH fix for realm_decisions