Merge pull request #516 from RosettaCommons/kimdn/zipper
 Merge pull request #516 from RosettaCommons/kimdn/zipper
[update of SandwichFeatures for upcoming publication (charge zipper) so that readers
    can get same results as I do]
    - debugged rama & p_aa_pp writing by reviving processing_decoy
    - prepare pymol to easily see residues with salt_bridges
    - allowed wt_for_pro_in_starting_loop_ etc. and readjusted those 3 weights
    - further refactoring regarding namespace core using
    - should not change any integration tests other than (expected) features and features_database_schema