Adds button to hide whitespaces from commit
Adds button to hide whitespaces from commit.
This works on commits, pull requests and compare pages.
Tampermonkey on 
Mozilla Firefox desktop.1.5.4
1.5.3
1.5.2
1.5.1
1.5.0
1.4.4
1.4.3
1.4.2
1.4.1
1.4
1.3
1.2.1
1.2
1.1
1.0
Use cases:
https://github.com/OpenUserJs/OpenUserJS.org/commit/aac291b83a5d5fa4fb4382080473ef3a4dd908c2 (commit)
https://github.com/OpenUserJs/OpenUserJS.org/pull/327/files (PR)
https://github.com/OpenUserJs/OpenUserJS.org/pull/327/commits/aac291b83a5d5fa4fb4382080473ef3a4dd908c2 (PR commit)
https://github.com/OpenUserJs/OpenUserJS.org/compare/master%40%7B1day%7D...master (compare)
https://github.com/Mottie/GitHub-userscripts/commit/21558ec79778a5067493c7bdb868c0fdca73b1d2#diff-bdac6481735676e63350e0fc9cc40db4 (compare with hash)
