modify template water so it matches LoProp

previously the net oxygen properties were more accurate than loprop
because taken from .out file, making tests to 2 decimal precision,
now test within 7 decimal
add test_properties

moved previous test_properties to test_various, it is unorganized and
has tests which are overlapping from modules, which makes it too
generall
added test for use_generator

switch to new branch implement easier functionality for use_generator
	without complicated arg_parse reliance
modified use_generator to have tupples as options, all predefined
Merge branch 'use_generator_simple' into unit_tests
added tests to use_generator and removed unnused methods
remove build_pna which produces filesdepends on files
added mocktest for write/open to build_pna
add mock for gen_mols_param in use_generator
added mocks to molecules/Water
added unit tests for Cluster
Merge branch 'unit_tests'