In order to make the license that applies to each file as clear as possible, and to be consistent with elasticsearch, we are adding Apache 2.0 license headers to the top of each file.
Existence of this header is enforced by eslint and tslint and missing headers were automatically added in the last commit by running:
```
node scripts/eslint --fix && node scripts/tslint --fix
```
* [precommitHook] move to dev script
* [eslint] fix lint error
* [dev/eslint] do simply boolean checks first
* [dev] use shared REPO_ROOT constant
* [dev/File] precompute relative/ext of path
* [dev/eslint] fix relative import
* [dev/eslint] fix typos
* [grunt] remove unused run:eslintStaged config
* [dev/run] only create log if we are going to use it
* [dev/run/isFailError] ensure return value is Boolean
* [dev/precommitHook] use less intermediate vars
* [functional_test_runner] replace functional testing tools with custom/pluggable solution
* [functional_test_runner] Convert unit tests to commonjs format
* [functional_test_runner] Fix dashboard test in wrong mode
* [functional_test_runner] Add dashboardLandingPage test subject
* [functional_test_runner] Get Visualize page object
* [functional_test_runner] Fix outdated references
* [functional_test_runner] Fix more outdated refs
* [functional_test_runner] Remove duplicate tests
* [functional_test_runner] Improve test readability
* [functional_test_runner] 😞 So many duplicate methods
* [functional_test_runner] Move mgmt `before` outside toplevel describe
* [functional_test_runner] Settings page obj missing methods
* [functional_test_runner] Add improvements from @gammon
* [functional_test_runner] Fix return statements in async funcs
* [functional_test_runner] Move before() to correct scope
* [functional_test_runner] Add after() hooks to remove index patterns
* [functional_test_runner] Attempt to fix vertical bar chart tests
* [functional_test_runner] Clean up
* [functional_test_runner] Reinstate unit tests
* [functional_test_runner] Set default loglevel back to info
* [functional_test_runner] Replace `context`s with `describe`s
* [functional_test_runner] Better error handling
* [functional_test_runner] Add in new Tile Map tests
* Incorporate changes from master
* [functional_test_runner] validate that every test file has a single top-level suite
* Update contributing doc with link to full doc
* [docs] Spelling and grammar fixes
* docs: writing and running functional tests
* [docs] Move plugin doc to plugin area
* [docs] Housekeeping. Doc in wrong place
* [docs] Remove dup doc file
* [grunt] Only run mocha_setup when running tests, not every grunt task
