* teams: add db migration for email column in teams table

* teams: /teams should render index page with a 200 OK

* teams: additional backend functionality for team and team members

Possibility to save/update email for teams.
Possibility to retrive avatar url when searching for teams.
Possibility to retrive avatar url when searching for team members.

* teams: display team avatar and team member avatars

Possibility to save and update email for a team

* teams: create team on separate page instead of modal dialog

* dashfolders: fix url for create dashboard from manage dashboards

Don't include folderId querystring if you don't manage a folder and
creating a new dashboard from there.

* dashfolders: don't store folderId in dashboard model

Use folderId from meta instead
#10307

* dashfolders: minor ux fix

* dashfolders: minor fix for edit folder title

Use the dialect specific BooleanStr when comparing boolean columns/values.
Fixes #10300

Possibility to delete row and all its panels or
only the row which will leave its panels in the dashboard.

fix missing comma in documentation output example

minor typo:
'(' instead of '/'

Create new folder from the folder picker component

added new to new dahsboard and folder

Fixes #10231.

WIP: delete unused icon files 

* devkid-patch-1:
  pushover: update default message
  Add default message for Pushover notifications

* 'patch-1' of https://github.com/devkid/grafana:
  Add default message for Pushover notifications