Ensemble fixes required #1501
Description
Describe the bug
A super ticket for the bugs in running ensembles.
- OOM for most ensemble plots #1502
- Failure of runs with 10+ variables #1503
- Histogram aggregation produces one plot per ensemble member #1504
- Timeseries plots fail with ensembles #1505
- Profiles do not plot in ensemble mode #1530
- OOM for ensembles doing pressure level spatial plots #1531
- Missing axes in transects when ensembles are used as input data #1534
- UM transects are plotted upside down #1535
- Remove postage stamp histogram plotting #1621