Merge pull request #161 from smithkm/master

Updated servlet-api dependency to 2.5
checking config enabled/disabled during when loading quota store
Merge pull request #162 from jdeolive/diskquota_disabled

checking config enabled/disabled during when loading quota store
Revert "checking config enabled/disabled during when loading quota store"

This reverts commit 30920440329983d0959d841e26cfcdc635d8a4b9.
remove leftover dependency on bdb je from diskquota-jdbc
Harden writeFile, make sure the output stream is closed, consider also the case that the rename against an existing target might not work
Shutdown eventual old cache info build when start() is called again
Update global quota when a layer or a gridset is removed
Code documentation and minor cleanup to ParameterFilter