Refactors file system of platforms and adds test to ensure GitHub and GitLab have same module.exports signatures.

Repository logic code has been rearranged for better logic and file separation.

Closes #654 

By searching for the *original* value, this caused problems if a tag gets updated multiple times in the same PR.

Closes #1050 hopefully for the last time

This PR refactors the onboarding PR logic into its own subdirectory and redesigns it to use plain markdown instead of html. Plain markdown in PR bodies is a requirement for adding VSTS Support ( #1049 ).

* refactor: move monorepos logic to npm manager

* fix test

Also clarify docs that encrypted config must be contained in renovate.json (i.e. not package.json).

This was necessary when attempting to use jest mock all

Renovate already detects PRs mistakenly closed during a certain time period when a bug was present. Now, it will rename those so that they are no longer detected and the ignore code does not have to remain indefinitely.

This allows parameter substitution to work correctly (undefined is replace, null is not).

Closes #1076

This refactor means that createPr now takes `labels` as a new parameter so that the GitLab API can include them with the MR creation request, so save one API call. This also fixes #985 as a result.

99% of the time we should not Renovate forked repositories. Previously, we skipped onboarding them unless a renovate.json was present. However, that meant that if someone forked a repository where the source was using Renovate, then the fork gets renovated automatically too. After this change, forked repositories need to set renovateFork=true in their renovate.json

Closes #940

BREAKING CHANGE: Forked repositories now need to configure renovateFork=true in renovate.json

This commit drops support for nodejs 6 now that nodejs 8 has reached LTS. Renovate will now publish only the `lib/` directory and not `dist/`. Some babel is necessary to leave in-place because Jest otherwise crashes when encountering the spread operator.

BREAKING CHANGE: Node.js 6 is no longer supported

GitLab is now hardcoded to apiv4 with no detection performed.

BREAKING CHANGE: GitLab API v3 is no longer supported

Renovate will now check ignorePaths values for either (a) a string match, or (b) glob pattern. e.g. a string of ‘node_modules/‘ will ignore ‘node_modules/foo/package.json’ and ‘backend/node_modules/foo/package.json’ but it will also ignore ‘not_node_modules/foo/package.json` too. Therefore a blog pattern of `**/node_modules/**` is superior.

Closes #1054

BREAKING CHANGE: ignorePaths now supports globs and may match more than before, but that’s probably a good thing.

BREAKING CHANGE: GitHub *App* support code has been removed from within this repository.

Closes #590

BREAKING CHANGE: lock file maintenance is now disabled by default.

By defaulting pinVersions to null, this allows Renover to autodetect on a per-package file basis. Users may still manually configure (override autodetection) pinning enabled or disabled via config.

Closes #589

BREAKING CHANGE: Renovate will no longer default to pinning versions - instead it will autodetect whether to pin, unless overrided.

Drop support for (unused) ignoreFuture option.

Closes #588

BREAKING CHANGE: Support is removed for ignoreFuture configuration option

Helps with troubleshooting #1072