Misleading returned message for High Profile

The check_high_profile task currently returns "Significant Burst event. Applying label" if the HIGH_PROFILE label is applied because a Burst event had the lowest FAR. However, since the Burst significant threshold is lower than the CBC threshold, a Burst event can in theory have a FAR lower than the CBC searches and yet not be significant. This is the expected behaviour (confirmed by Keita on Mattermost), and HIGH_PROFILE should indeed be applied then, but the returned message should be changed to something like "Event with the lowest FAR is a Burst event. Applying label". (it could be even more verbose by mentioning that it is a non-CBC burst event to handle the CWB-BBH case but this may change if it switches to the CBC search).