Wrong labels on x and y axis in 3D plot

Wrong number of days in year

Wrong number of days in year

Name of the parameter to read in read_data_full was hardcoded. Now it is passed as function parameter.

Removed part that was using Dr. Buchwalds code and replaced it with a placeholder (get_analytic_solution). Replaced legend_without_duplicate_labels with new code.

Fixed bug which was causing to draw a flat line in plots close to 0. This applies to ogs_compare as well. Added legend to ogs_compare_separate. Adjusted __save_figure to make the plots more space efficient.

Errors were in settings setup and in

Now the output files names start with the name of the parameter they show.

Now the reference experiment can be defined globally in the settings dictionary. Alternatively, the firs in the list of detected experiments will be used.

Some lines in ogs_compare.py were adjusted accordingly.

Now get_file_by_extension is called only once, when the data is read. Changes in other files result mostly of required adjustments.
Apart from this. Now read_data method can accept key-word arguments, so using a dictionary to create main class is not mandatory anymore.

Merged both functions related to observation points into one file.

Now saving of figures is moved to a separate function shared by all plot functions. Adjusted naming system accordingly.

Removed legacy ogs_compare file

The basic transition is finished, functionalities are the same. Simple test has been passed.

Separate some functions

See merge request !1

# Conflicts:
#   main_compare.py

Related to separation of ogs_compare and tool functions.

Remove unnecessary os.getcwd in lines responsible for saving of the figures.

Style related thing has been changed.

Changed some things related to previous commit.

Moved some legend_without_duplicate_labels and match_time_step to separate files. Modified ogs_compare accordingly.