Merge pull request #86 from zijistark/dev

Fixes for Muslim Invasion CB
Imperial reconquest tier decisions
Added icon for Imperial Reconquest check

Also fixed a missing bracket
Merge pull request #87 from thefinestsieve/beta

Added icon for Imperial Reconquest check
Sniggles' updated
Removed obsolete crusade succession law TODOs
Ibadi may now also use caliphal subjugation CB
Bugfix for recent muslim_invasion changes
AI IR tier check decisions disabled formally
Fix IR war check decision display order
Heavy fixes to IR war checks / follows CB

Assumes the SWMH Imperial Reconquest CB is Pure Truth. I couldn't
reasonably question it when aligning the decision logic and testing,
but I can say that all of the de jure liege title switcheroos which we
do by event from 1066-1100 really complicate matters in terms of
displaying what needs to be displayed to the user usefully.
Minor bugfix (to vanilla?) in other_claim
Increased AI chance of promptly taking loan at war
Bankruptcy modifier re-enabled, AI handicap
AI only takes loans at lower negative balances