Make colorization of prefix and postfix optional in singlestat

[skip ci]

Fix footer CSS issue

* Karma to Jest: viewstate_srv

* Karma to Jest: annotations_srv

* Remove comments

* Karma to Jest: series_override_ctrl

* Remove unnecessary code

* Class to function and fix lint error

* Fix ngInject

* Begin Karma 2 Jest: value_select_dropdown

* Add return for Promise

* Remove Karma test

[skip ci]

[skip ci]

[skip ci]

[skip ci]

login: fix layout issues

[skip ci]

docs: update installation instructions

[skip ci]

Set correct text in drop down when variable is present in url

* Webpack 4

* webpack: force angular version 1.6 as 1.7 has removed a legacy feature toggle Grafana needs, switched from awesome-typescript-loader to ts-loader & forked ts checker

* Webpack 4

* webpack: force angular version 1.6 as 1.7 has removed a legacy feature toggle Grafana needs, switched from awesome-typescript-loader to ts-loader & forked ts checker

* upgrade ts loader

* simplified splitChunks

* upgrade circle node image to v8

* webpack: minor changes, using the new mode option, removed unused awesome-typescript loader, investigating karma issue but no solution yet

* fix: change angular mocks version restriction to be more strict

* add babel-loader for HMR support, fix karma debug runner

* babel-loader to yarn.lock

* webpack: changed from ExtractTextPlugin  to MiniCssExtractPlugin, and updated the minification step to use new webpack4 optimization config section

* webpack: remove css minifcation from general css processing as it's done in the webpack optimization step

* limit vendors chunk to .ts and .js files

* fix: removed typescript compile error, wanted to see if we still got test failure for that

* tech: upgrade uglify-js, should be faster now

* handle "dn" ldap attribute more gracefully

* use strings.ToLower

Fix typo

routing: allows routes to be added to existing groups

this enables services to add routing to ex /api
without causing conflicts.

[skip ci]

enhance error message if phantomjs executable is not found

if arm build, explain that phantomjs is not included by default in arm
builds. If not explain that phantom js isn't installed correctly