Add a most voted comments widget

Signed-off-by: Paul de Wouters <paul@hmn.md>
Register widget
Merge pull request #30 from humanmade/issue-30

Sidebar widget
No need to check if user can vote
Prevent users from upvoting their comments
Merge pull request #25 from humanmade/issue-25

Prevent users from voting their own comments up?
Fix Readme file and add contributors

Fixes #53
Fixes #48

Signed-off-by: Paul de Wouters <paul@hmn.md>
Regenerate readme.md
Merge pull request #53 from humanmade/add-contributors

Add CFO as a contributor
Fix composer.json
Update CONTRIBUTING.md
Merge pull request #32 from humanmade/issue-32

Add composer support
Update CONTRIBUTING.md
Fix some spacing and formatting
Add link to github

Signed-off-by: Paul de Wouters <paul@hmn.md>
Regenerate readme
Merge pull request #56 from humanmade/edit-readme

Edit readme
Fix a PHP notice

Signed-off-by: Paul de Wouters <paul@hmn.md>
Move comments to own file
Add a comment template file