Ref #5277

This reverts commit ab1c5b20.

Closes #442 

Closes #2024

Renovate now comes with a variety of package managers supported, each with their own filename pattern(s). These patterns are now exposed for user configuration through the new `fileMatch` list/array configuration option, which has been added to each manager (npm, bazel, docker-compose, etc). `fileMatch` is defined as a mergeable list, meaning that users can add to the default pattern to extend the files being detected.

Closes #799

pathRules are now migrated to packageRules.

Closes #1880 

The matchCurrentVersion option sets a range of versions that a package update can be in. If the package's current version doesn't satisfy the matchCurrentVersion range, it won't match the rule.

Closes #1771

This PR refactors `branchName`, `commitMessage` and `prTitle` so that they are more easily editable and hopefully more understandable. By breaking each up into subsections, users can modify one part without needing to copy/paste the entire string.

Directly editing any of these fields will now be deprecated and a warning issued.

packageRules selectors should only ever be inside a packageRule object, or at the top level of a preset. This feature enforces this rule with a validation check.

Closes #1773 

Validate that user-inputted regex for package patterns are valid RegExp().

Closes #1450 

Validates that each packageRule must contain at least one selector. Resolves the rule first to allow for presets.

Closes #1345, Closes #1693

`Adds a config validation check for timezone, checking it against the list in moment-timezome.js`. Configs with invalid timezones will raise a configuration error.

Closes #1483 

A semver range defining allowed versions for dependencies

| name | value  |
| ---- | ------ |
| type | string |

Use this - usually within a packageRule - to limit how far to upgrade a dependency. For example, if you wish to upgrade to angular v1.5 but not to `angular` v1.6 or higher, you could defined this to be `<= 1.5` or `< 1.6.0`:

```
  "packageRules": [{
    "packageNames": ["angular"],
    "allowedVersions": "<=1.5"
  }]
```

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

Also enables config errors to be shown in Configure Renovate PR.

Closes #550

- Renames `packages` to `packageRules`
- Refactor `packageName` to `packageNames` array
- Refactor `packagePattern` to `packagePatterns` array
- Adds `excludePackageNames` array
- Adds `excludePackagePatterns` array

Closes #529

Massaging of string to array is done in migration function.