Prepare release
Merge pull request #320 from my-personal-forks/prep-release

Prepare release
Fix #314 - Add a 'StopAllCommand'

Combines stopping running scripts and stopping running services.

What will be stopped:

- server apps launched via F7
- server apps launchen in Observatory (Ctrl+F7)
- pub serve
Rename 'Dart: build' to 'Dart: pub build'
Fix #315 - Sort commands

Most former 'Build: Dart: <command>' have been switched over to
'Dart: <command>'.
Merge pull request #322 from my-personal-forks/fix-314-stop-running-scripts

Fix #314 - Add a 'StopAllCommand'
Merge pull request #321 from my-personal-forks/fix-315-rename-build-task

Fix 315 rename build task
Fix #285 - Start browser at current file (if it's .html)
Merge pull request #323 from my-personal-forks/fix-285-open-current-file-in-browser

Fix #285 - Start browser at current file (if it's .html)