* Security: Update default content_security_policy_template
- Add 'strict-dynamic' back to script-src
- Add ws(s)://$ROOT_PATH to connect-src
- Change onEvent to on-event in angular templates to fix CSP issues in firefox.
- Add blob: to style-src
* update fixed
* update fixed
* update fixed
* don't change any tests
* add mising space
* Custom unit formats
* return a string for kbn
* return a string for kbn
* return a string for kbn
* Simplify unit tests
* More units
* fix more tests
* fix more tests
* fix more tests
* format values
* format values
* TimeSeries to string
* more kbn tests
* use the formatted value
* BarGauge: Fixed font size calculations
* support prefix
* add si support
* avoid npe
* BarGauge/BigValue: value formatting
* fix some tests
* fix tests
* remove displayDateFormat
* another unicode char
* Graph: Use react unit picker
* Updated unit picker
* Fixed build errors
* more formatting
* graph2 tooltip formatting
* optional chaining
* Chore: Adds neccessary packages
* Wip: Initial dummy test in place
* Feature: Downloads Chromium if needed
* Fix: Adds global config object
* Refactor: Adds basic e2eScenario
* Build: Adds end to end tests to config
* Build: Changes end to end job
* Build: Adds browsers to image
* Build: Adds failing test
* Refactor: Adds first e2e-test scenario
* Fix: Ignores test output in gitignore
* Refactor: Adds compare screenshots ability
* Refactor: Removes unnecessary code
* Build: Removes jest-puppeteer
* Fix: Replaces test snapshots
* Refactor: Creates output dir if missing
* Refactor: Changes aria-labels to be more consistent
* Docs: Adds section about end to end tests
* Fix: Fixes snapshots
* Docs: Adds information about ENV variables
* graph: initial histogram support #600
* graph histogram mode: add Bars number option
* graph histogram mode: fix X axis ticks calculation
* graph histogram mode: change bar style (align and width)
* refactor(graph): move histogram functions into separate module
* graph histogram mode: rename series to "count"
* graph histogram mode: fix errors if no data
* refactor(graph and heatmap): move shared code into app/core
* graph: add tests for histogram mode