dataobj zVar dimensions different for zVars with one or many CDF records

[ErikPGJ]

Step 1: Latest code?

This issue is present in SOdevel 1ea1d71 thomas-nilsson-irfu (2019-09-06 13:15:26 +0200) Merge remote-tracking branch 'origin/devel' into SOdevel

Step 2: Describe your environment

MATLAB R2016a
Ubuntu 18.04.3 LTS

Step 3: Describe the problem

Using irfu-matlab's dataobj to read CDF file. The meaning of zVar indices in dataobj variables, *.data..data, change depending on whether the zVar has 1 or many CDF records.

Expected behavior

Consistent meaning of array indices regardless of the number of CDF records. No special case for 1 CDF record.

Actual behavior

1 CDF records: All variable indices represent the non-record dimensions.
>=2 CDF records: The first index represents the CDF record.

Examples

1 CDF record:
size(Do.data.BIAS_CURRENT_OFFSET.data) == [3 1]
size(Do.data.TRANSFER_FUNCTION_COEFFS.data) == [ 4 2 8]
2 CDF records:
size(Do.data.BIAS_CURRENT_OFFSET.data) == [2 3]
size(Do.data.TRANSFER_FUNCTION_COEFFS.data) == [2 4 2 8]

NOTE: Related to issue #41?