Hide the selection box for the host group, because the host group has not been supported.
Show the message when the number of servers is zero.
Tune the height of text boxes.
Extend getTriggerInfoList() so that the host ID can be specified.
Add const qualifiers for input paramters.
Add a const qualifier for an input-only paramter.
Fix a potential problem in which the comparison may not work correctly when the order of data by getTriggerInfoList() changes.
Add a trigger ID in the output of FaceRest's trigger request.
Extend FaceRest's trigger GET request so that the server ID and the host ID can be specified.
Expand tabs to spaces.
Clean up with a helper function.
Add a new method: ConfigManager::getAllowedTimeOfActionForOldEvents().
Add a new constructor of TimeCounter.
Add a mechanism not to perform an action for too old events.
Clean up to improve readability.
Add a general form of getLog() to make it easy to create similar functions.
Extend action log columns to identify the event concerned with the log.
Add a new version of getLog() that returns the log with the specified server ID and event ID.
Add a new method: ActionManager::shouldSkipByLog().

This function decides whether an action should be performed or not
based on the action log.
Add a new test: test_shouldSkipByLogNotFound().