1st Crusade: Council of Clermont and the Byzantine alliance

[LimeKK]

The 1st Crusade doesnt feel as groundbreaking in-game as it ought to. Needs a bit more tension and event-chainyness. Also, it was (officially) undertaken to restore the ERE's borders in order to rebuff the Muslims and the majority of the Crusade's leaders even swore an oath to the Emperor (which they immediately broke, but w/e). Would be nice to include as well, if only for fluff.