DEICH-6411 - Sibyl - Fixed debug config and coding error related to events/from(Start/End)Time/to(Start/End)Time sort

DEICH-6411 - Fixed debug config and coding error
    
    fromStartTime and toStartTime was overwritten by the string representation of fromEndTime and  toEndTime.
    
    go 1.19 upgrade done.
    
    Fixed debug Dockerfile.
    
    Added path to assets as env variable.

DEICH-6411 - TK - using start time for date sorting
    
    This way events on the same day show up in correct order. Otherwise, the order within a day is random.

Finalizes DEICH-0000 - Upgraded to go 1.19