add ported Code style documentation page
bump version
mention Vim settings for 4-space indentation
fix code style formatting
update Changelog
Merge pull request #50 from boegel/docs_code_style

add docs page on code style
fix minor style issues in Code style page
moar stylistic fixes in Code style page
bump docs release to 1.0.3
update changelog
Merge pull request #51 from hpcugent/develop

update docs to release 1.0.3, with ported Code style page