fix: changed modal to fixed positioned, this change makes modal maintain scroll position, fixes #8800

elasticsearch: changed ad hoc filters from using term filters to using phrase match queries, closing #9095

Add support of non_negative_difference() function from InfluxDB 1.3
https://docs.influxdata.com/influxdb/v1.3/administration/differences/#functions

Azure's MySQL implementation appears to always respond with an Authentication Method Switch Request Packet requesting `mysql_native_password` auth even though the client's initial Handshake Response already included the native password credentials.

Most MySQL client libraries support this but Golang's go-sql-driver/mysql requires the `allowNativePasswords` DSN parameter set to enable it. Without this parameter, Grafana fails to authenticate to the database with the error message "this user requires mysql native password authentication."

References:

* https://web.archive.org/web/20160814002743/http://dev.mysql.com/doc/internals/en/connection-phase-packets.html#packet-Protocol::AuthSwitchRequest
* https://web.archive.org/web/20160814002743/http://dev.mysql.com/doc/internals/en/connection-phase-packets.html#packet-Protocol::HandshakeResponse
* https://github.com/go-sql-driver/mysql#user-content-allownativepasswords

Adds back feature that adds 'sep=;' text that excel needs in a csv file.
Also adds toggle to make this optional if exporting to other spreadsheet
programs. Fixes #9083.

dataproxy: refactoring data source proxy to support route templates and wrote more tests for data proxy code, #9078

Mulit => Multi

ref #7725

Fixes #9069

for the host field on the data source config page. Fixes #9046

for the host field on the data source config page. Fixes #9046

ref #9024

If the template variable query has two columns named __text and __value
then return a list of key values. The value is used when the variable is
interpolated in the query. Allows mapping of texts to ids.

Fixes #8855