add postgres samples

This commit contains sample files which generate postgresql
database that contain opengamma data.
config fixes
Merge pull request #10 from joequant/add-db-example

add postgres samples
[PLAT-5734] : remove _fixingPeriodAccrualFactorsActAct from CouponONCompounded and CouponONCompoundedDefinition
[PLAT-5732] : use the daycount of the index in CouponONCompoundedDefinition
[PLAT-5023] Added ability to dump a differences report to a file; some logging changes; standardised name (Ian)
[PLAT-5737] Added Mexican peso to Currency
[PLAT-5739] Added AUD-AONIA-OIS-COMPOUND
[PLAT-5741] Changed signature of typesForCurves
[PLAT-5743] Tidied up FloatingAnnuityDefinitionBuilder
[PLAT-5746] Added support for CouponONArithmeticAverageDefinition
[PLAT-5747] Implemented initial rate for floating coupons
[PLAT-5679] Changed hard-coded convention on ImpliedDeposit. Change currency convertion on P/L function. (merge from marc)
[PLAT-5565] Override hashCode and equals for data bundle and result class
PLAT-5678 (Julian) - Surface shifting syntax should be like curves
[PLAT-5741] Updated jodabean
SSM-98 - Convert code to use Config links (Jim)
SSM-98 - Convert code to use Config links (Jim)

Fix tests
[PLAT-5738] : generalised the rate cut off for Overnight arithmetic average coupon
[PLAT-5738] : fix the annuity definition constructors
[PLAT-5747] Stop NPE for initial rate less swaps