fill out template in copyright line in LICENSE
remove unused imports
add missing imports
remove unused variables
purely style fixes, line length, unused variables
docs: remove all trailing whitespace
docs: fix length of headings (sphinx warning)
docs: add missing newline which hid a code block
docs: add toc entry for profiles, remove others

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Merge pull request #1 from catkin/metadata-file-fixup

Metadata file fixup - cleanup from Will