ERT-507 - Added support for reading the use_log_scale flag for trans_funcs
ERT-507 - Exposed the should_us_log_scale to plot data in python
ERT-507 - Added should_use_log_scale flag to plot data
ERT-507 - Added plotting of histogram with log scale
Merge pull request #387 from jepebe/ERT-507

Ert 507 Added support for log scaling of histograms.