Improve PostgreSQL Query Editor if using different Schemas

more detailed error message for loki

Explore logs css refactor

if grafana tries to access loki without promtail running
it will return an error.

fixed logs to time series calculation issue, increased bucket size

Rename Grafana Logging Datasource to Loki

This handles three different error cases for the
config page so that the user gets an error and not
just a blank red error box.

pkg/*: Fix misspelling issues using locale US

fix for panel height when embedding 

fix for panel-initialized event not being called

added support for influxdb cumulative_sum function in tsdb

redact value for plugin proxy routes

See,
$ find . -type f | xargs misspell -locale US | grep -vi -e vendor -e devenv -e Unknwon -e Destory | grep pkg
./pkg/services/sqlstore/org_test.go:190:15: "frome" is a misspelling of "from"
./pkg/tsdb/elasticsearch/response_parser.go:544:24: "Unkown" is a misspelling of "Unknown"
./pkg/tsdb/opentsdb/opentsdb.go:87:20: "marshalling" is a misspelling of "marshaling"
./pkg/components/dynmap/dynmap_test.go:2:7: "Licence" is a misspelling of "License"
./pkg/components/dynmap/dynmap.go:2:7: "Licence" is a misspelling of "License"

fix for panel embedding. Solo panel height was not correctly set. Made panel--solo into panel-solo class. in develop branch we have remove the need for the panel class

JS tooling: upgrade to babel 7

Use buildTableConstraint instead of buildSchemaConstraint to find the datatype of a column if using a table from a different database schema

Explore: Display duplicate row count as number

- the pips were hard to see
- make it really clear which rows are duplicates by allocating a column to show number

Explore: Logging query live preview of matches

A logging query has a selector part and a regexp. The regexp matches are highlighted when results return.
This change adds live preview to matches when modifying the regexp in a search field.

- delegate retrieval of match query to datasource
- datasource returns search expressions to be used to highlight a live preview of matches
- logs row now takes preview highlights
- logs row renders preview highlights with dotted line to distinguish from query run matches (solid line)
- fix react-highlight-words version to ensure custom chunk matcher
- custom chunk matcher can now also take incomplete regexps, eg, `(level` without inifinte looping
- perf: debounce of live preview to 500ms
- perf: only top 100 rows get the live preview
- preview is only supported with one query row (multiple rows semantic makes this tricky: regexp for row n should only filter results for query n)

only make it possible to scan for older logs if there is at least one…

Misc styling fixes to explore