chore(app): remove rogue `log`

Odd `console.log()` left in from the skeleton
feat(webhook): add extractId functionality

Add `extractId` and `createUrl` functions to properly format links
based on IDs in messages.
fix(webhook): update regex & notification settings

Update regex to be more strict with message types. Change the
notification colour to gray.
Merge pull request #2 from deskfed/improve-messaging

Improve messaging. Closes #1