Fix failed-model-tickets to work with new uuids
Extract method to get events
Extract Method get_builds
Extract Method get_tickets
Add check for model->status to suppress warnings
Added genome model build determine-error
Redesigned genome model admin failed-model-tickets

No longer uses ErrorLogEntry
Handles grouping errors better (especially unstartable ones)
Put restriction on how long error_text can get
Sys->shellcmd sets default handler for SIGPIPE

POE (used in legacy workflow) was setting it to IGNORE and thus
countering our efforts to set -o pipefail and catch errors.  Since we
expect many errors in the wild, we're just warning on the error code 141
(PIPEFAIL) and handling cases as they pop up.
Updated class browser cache.
Updated `genome` tab completion.
Updated `genome` tab completion.