ERT-552: Using util_mkdir_fopen() when writing surface files - to ensure that directories are created.
ERT-552: Added testing of geo_surface_fprintf().
ERT-545 - Plots should be ordered
ERT-549 - Magic strings substitution in paths in config files in IDE
ERT-557 - Added check for existence of data when reading from storage.
ERT-555 - Disable "Add case to plot" when 5 cases are reached
Merge pull request #422 from jepebe/ERT-555

ERT-555 - Disable "Add case to plot" when 5 cases are reached
ERT-570 - Plotting performance issues
Merge pull request #421 from jepebe/ERT-557

ERT-557 - Added check for existence of data when reading from storage.
ERT-570 - Plotting performance issues
Merge pull request #418 from jepebe/ERT-545

Ert 545 Reordering of plot data types.
Merge remote-tracking branch 'upstream/master' into ERT-570

Conflicts:
	devel/python/python/ert_gui/tools/plot/plot_window.py
Merge pull request #423 from jepebe/ERT-570

Ert 570 Plotting performance issues
ERT-549 - Added support for defines that refers to defines.
Merge remote-tracking branch 'upstream/master' into ERT-549
Test now works with larger enkf_fs_manager capacity.
Merge pull request #415 from joakim-hove/ERT-552-surface-create-directory

Ert 552 surface create directory
Merge pull request #419 from jepebe/ERT-549

ERT-549 - Magic strings substitution in paths in config files in IDE