Style and too long lines fixes in soc.models.role module. Patch by: Pawel Solyga Reviewed by: to-be-reviewed

Remove unused imports, add missing blank lines, fix too long lines, fix docstring parameters to match the ones in method declaration, rename to short variable names in soc.logic.models.base module. Patch by: Pawel Solyga Reviewed by: to-be-reviewed

Add missing whitespace in soc.logic.models.role module. Patch by: Pawel Solyga Reviewed by: to-be-reviewed

Fix too long lines in soc.logic.models.student_proposal module. Patch by: Pawel Solyga Reviewed by: to-be-reviewed

Renamed rankerroot to ranker_root and made some changes due to comments. Patch by: Lennard de Rijk Reviewed by: to-be-reviewed

Fixed early line ending in StudentProposal model. Patch by: Lennard de Rijk Reviewed by: to-be-reviewed

Add missing docstrings, fix indentions and too long lines in soc.logic.cleaning module. Patch by: Pawel Solyga Reviewed by: to-be-reviewed

Added access check to student_proposal review. Hosts and Developers can comment but not score an proposal (unless of course they are an org_admin/mentor). Fixed the initial scoring being set to -4, which is annoying if you just want to comment. Patch by: Lennard de Rijk Reviewed by: to-be-reviewed

Remove unused normalized variable from denormalizeAccount method in soc.logic.accounts module. Patch by: Pawel Solyga Reviewed by: to-be-reviewed

Fix indention in _readonly_field_as_twoline_table_row.html template. Patch by: Pawel Solyga Reviewed by: to-be-reviewed