Changing to multi-module Maven project
Merge branch 'v1' into v2
Moved remaining files into Maven submodule
Merge branch 'v2' into v3

Added separate sub-module for integration tests that build a jar and are
included into the webapp war without dependencies
IDEA module cleanup
Merge branch 'v1' into v2
Useless previous commit
Merge branch 'v1' into v2
Merge branch 'v2' into v3
Fixed test URL
Merge branch 'v3'

Moved new v4 features into webapp module