Removed headings-margin-bottom and gf-form-margin

Removed variable $panel-margin

Collecting metrics in ci process

8px system margins

Heatmap: Fixes Y-axis tick labels being in wrong order for some Prometheus queries

Multi valued datasource variable

heatmap: able to hide buckets with zero value

Remove deprecated kbn test

Call ora instead of instantiating it

Add a basic table editor to grafana/ui

rename handleXXX to onXX events

- Set container width to 100% so column widths can be calculated properly
- Sets duplicates, level, timestamp, local time to a fixed width based upon em units since the size of these are static
- Sets labels to be 20%
- Remove min-width:80% on message column so that it now consumes remaining space
- Additionally fixes long labels from overflowing into the messages column by properly setting a max-width per label and hiding overflow

closes #15673

Signed-off-by: Steven Sheehy <ssheehy@firescope.com>

Merge branch 'multiselect-repeatby-datasource' of https://github.com/jdoupe/grafana into jdoupe-multiselect-repeatby-datasource

Logo takes you Home instead of toggling side menu #15482

chore: Move sidemenu out of context service and use the logic we have in the router already for hiding the sidemenu

Styling update to fonts