added h2 database aggregation
db performace upgraded
Merge branch 'master' into h2aggregation
remove test files after test completion added
vcs and metric serialization added
broken history
added and filled in commits table
added parametrized metric serialization and fixed file history
changed statements to prepared statements and moved some maps from memory to db
added loading methods and changed check select before commit insertion
moved load responsibility from value to aggregation
made project multi metric history in db, but this slows down classifing
reworked impl, now slow part is getting project multi value map (possibly due to metric deserialization)
added map for storing metric serializations, added indexes to db
optimized data export
data export fixed
Merge branch 'master' into h2aggregation

Conflicts:
	tcbpplugin-server/src/main/java/jetbrains/buildServer/bugprediction/AsyncBeanDataManager.java
fixed merge