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
```
* [tslint/kbn-system-loader] remove tslint overrides
* [tslint/kbn-system-loader] apply autofixes
* [tslint/kbn-system-loader] override max-classes-per-file for tests
* [tslint/kbn-system-loader] use I-prefix for interface names
* [tslint/kbn-system-loader] use comments to "fill" empty blocks
* [tslint/kbn-system-loader] use lowerCamelCase for variable/property names
* [tslint/kbn-system-loader] sort object keys alphabetically
* [tslint/kbn-system-loader] ensure that public methods come before private ones
* [tslint] lint typescript code
* [tslint] filter projects when running specific project
* [dev/ts] use more explicit types
* [dev/ts] add note about why using glob
* [dev/ts] rely on ts, use fewer getters
* [typescript] add typescript support for the server and browser
* [ts-jest] upgrade to latest version
* [jest] support test.tsx files
* [jest/ts] modify `ts-jest.tsConfigFile` config based on filePath
* [types] use correct major version of minimatch types
* [jest] add ts support to x-pack jest config
* [ts/projects] fix tsconfig.json not found error message
* [optimizer/ts] use lowercase jsx option
* [tsconfig] remove ui/* alias
* [plguin-helpers] remove mention of `buildSourcePatterns`
* [plugin-helpers] expect typescript to be a devDep
* [dev/build] place transpile tasks next to each other
* [ts/x-pack] add common and server directories to ts project
* [dev/ts/project] use a limited set of globs to find tsconfig files
* Introduce @kbn/plugin-system
* Throw if plugin exposes a promise from 'start'
* TS updates
* rename
* Better error if missing plugin
* Api to add multiple specs at the same time
* isPromise prettier-ified
* Rename 'plugin' to 'system'
* Metadata + some cleanups
* Make it possible to type system metadata
* Throw if stop is async
* Add tests for System class
