P-BEAST patch addressing:

• ADAMATLAS-422 - add parameter to control amount of raw data read for downsampling from local repository
• ADAMATLAS-423 - fix duplication of merged files, when IS server is started with backup
• ADAMATLAS-424 - improve downsampling of rarely updated raw data
• ADAMATLAS-425 - implement health REST method for P-BEAST server
• ADAMATLAS-426 - fix user activity monitoring
• ADAMATLAS-427 - fix downsampling with all-updates activated
• ADAMATLAS-428 - fix previous near data point during downsampling

=== pbeast ===

fix issue with wrong previous near data point during downsampling, see ADAMATLAS-428 (Igor Soloviev) add option to print raw timestamp by pbeast_read_file (Igor Soloviev) fix issue ADAMATLAS-427: broken downsampling with all-updates activated (Igor Soloviev) fix user activity monitoring and bstconfig workaround, see ADAMATLAS-426 (Igor Soloviev) improve web test (Igor Soloviev)