Rename variables and properties set in namelist

It is sometimes not intuitive, what certain variables or properties mean. This is especially true for variables exposed to the user through the namelist. For the upcoming 1.0 version:

Following proposed changes in type names:

• Dimension -> Coordinate
• DimAlias -> CoordinateGroups
• all Dimension related procedures shall be checked to also contain the name coord

Following proposed changes in namelist variables:

• section data_arrays -> dataarrays (no underscores in other section names)
• section mainconfig -> main
• dim_name_alias -> coordinate_group (unsure about that)
• names -> name *
• transfer_funcs -> transfer_func *
• from_parameters -> from_parameter_values (to be more consistent with variable names in parameters section)
• dim_names -> coord_name *
• dim_reference -> coord_cell_reference
• dim_files -> coord_from_file *
• dim_vector -> coord_from_values
• dim_bound -> coord_from_values_bound
• dim_start -> coord_from_range_start
• dim_step -> coord_from_range_step
• dim_count -> coord_from_range_count
• dim_attribute_names -> coord_attribute_names
• dim_attribute_values -> coord_attribute_values
• dim_proj_str -> coord_proj_string
• dim_sub_dims -> coord_sub_dims
• dim_units -> coord_unit *
• upscaler_names -> upscaler_name *

/* singular as only one value need for each item