[BS-1495] The synchronization's cache must not be shared between the threads.
BS-423: updated document download url, according to new Portal specs
Revert "[BS-1495] The synchronization's cache must not be shared between the threads."

This reverts commit daef77f623d47133b40ef1a9263089ae03de382c.
Revert "BS-423: updated document download url, according to new Portal specs"

This reverts commit 860e67a25fc1f003311e9c0c1f12b4c50c8ae690.
BS-1511, add exception early when gateway are not merged correctly
[ENGINE RELEASE] Created the release 6.1.1-rc-01
[ENGINE RELEASE] Created the release 6.1.1-SNAPSHOT
BS-1510: fix expression evaluation on (not-yet) completed activity instances (in the case of long-lasting ON_FINISH connectors)
[ENGINE RELEASE] Created the release 6.1.1-rc-01
[ENGINE RELEASE] Created the release 6.1.1-SNAPSHOT
removed outdated code comment
Fixed 3 failing tests
BS-1379, make transient data persistent to disk
fix test that depend on current version of engine hard coded
Revert "BS-1379, make transient data persistent to disk"

This reverts commit b458b7a75a6b677fcb8b757b5797381e9c3d054c.
Merge branch '6.1.x'