SSP-856 Cleanup markup in existing Journal Entry comments.

Only worked on a MSSQL script b/c we have no real-world PG deployments.

This is a cherry-pick of 4db185706c9382c152b8c10a37f6c04bf4abc4dd

Conflicts:
	src/main/resources/org/jasig/ssp/database/masterChangeLog.xml
	src/test/resources/org/jasig/ssp/database/masterChangeLog-test.xml
SSP-858 Allow KeepSessionAliveFilter to be disabled

Using Spring profiles, KeepSessionAliveFilter is now completely
disabled (not even on the call stack) when running in standalone
mode.

When running in uPortal, that filter can now be disabled via
ssp-config.properties:

  uportal_session_keep_alive_timeout=-1

Or you can go in completely the other direction and cause it
to run on every request:

  uportal_session_keep_alive_timeout=0

Default is 10s:

  uportal_session_keep_alive_timeout=10

Conflicts:
	src/main/webapp/WEB-INF/spring/security-config.xml