Batch tile updates can overwrite analyzer tile updates

[vmarc]

Example from the log files: tile "hiking/14/8423/5966.mvt" was updated at 02:05:10 from the analyzer while processing minute diff 006/465/671 with changeset 162299103. The tile was updated after that from the batch process at 02:18:51, based on information collected between 02:00:06 and 02:00:51.

Solution 1: queue up analyzer tile updates during batch processing
Solution 2: disable batch processing? Investigate whether batch tile updates are still useful.
Temporary change to reduce risk: schedule batch update at 04:00, and/or just once per week?