[REQS-420] Created cross-gamma intra-curve calculator for multi-curve provider in one currency.
[REQS-420] Added for calibration tests.
[PLAT-420] Added cross-gamma cross-curves method in cross-gamma calculator.
[REQS-420] Added cross-gamma cross-curve calculator.
[REQS-420] Added multi-curve cross-gamma analysis; JPY examples.
[REQS-420] Added Full revaluation and cross-gamma approximation test using historical data.
[REQS-420] Added analysis of multi-curve cross-gamma and sum of column gamma. Historical testing with JPY data.
[REQS-420] Change format of documentation files.
[REQS-420] Cleaned comments on tests. Shorter pseudo-historical data for JPY.
[REQS-420] Merge with develop. Clean some unit test annotations and comments as per PR.
[REQS-420] Corrections following PR comments. Clean the calculator code with private internal methods.
[REQS-420] Changed back to original formatting.
Merge branch 'develop' into topic/reqs-420-rebase

Conflicts:
	projects/OG-Analytics/src/test/java/com/opengamma/analytics/financial/instrument/index/GeneratorSwapIborIborMaster.java
[REQS-420] Corrected the spelling from test Generators after merge.
Merge pull request #161 from OpenGamma/topic/reqs-420-rebase

Topic/reqs 420 rebase