Mutation Table Header Tooltips

[onursumer]

What? Why?

• Added tooltip support for the EnhancedReactTable column headers
• Added tooltip values for certain patient view mutation table columns

Checks

• Follows 7 rules of great commit messages. For most PRs a single commit should suffice, in some cases multiple topical commits can be useful. During review it is ok to see tiny commits (e.g. Fix reviewer comments), but right before the code gets merged to master or rc branch, any such commits should be squashed since they are useless to the other developers. Definitely avoid merge commits, use rebase instead.
• Follows the Airbnb React/JSX Style guide.
• Make sure your commit messages end with a Signed-off-by string (this line
  can be automatically added by git if you run the git-commit command with
  the -s option)

[onursumer]

Add tool tip for the mutation table column headers.