Added a spec which tests installation of resources.
Fix the updating of `:git`, `:svn`, and `:hg` dependencies when updating all pods.

Closes https://github.com/CocoaPods/CocoaPods/issues/2859.
[CHANGELOG] Fix formatting
Do not rely on *~/.cocoapods* being present.
Spec for resilience of SourcesManager against non-existing repos
directory.
[CHANGELOG] Add entry for 397b991
Merge pull request #2945 from CocoaPods/fix-sources-manager

Do not rely on ~/.cocoapods being present.
[Source Manager] Fix issue with source without URL

Closes #2965
Merge pull request #2939 from CocoaPods/add-resources-spec

Added a spec which tests installation of resources.
[installer] Group support added for Development Pods mirroring the folder structure
Some parameters renamed, and a clarifying comment added
[Project] Remove trailing whitespace
Merge branch 'issue/2145'
Merge pull request #2973 from CocoaPods/issue/2965

[Source Manager] Fix issue with source without URL
Generate resource bundle targets for not-build targets.

This can been skipped for not-build targets. In addition, there needs to
be a target dependency from the aggregate target to the resource bundle
target so that it is actually getting built.
Removed accidential Swift branch leakage
Added a spec which tests the installation of resources in case of a Pod without sourcefiles.

Conflicts:
	spec/cocoapods-integration-specs
	spec/integration.rb
Unit test for resource bundle target depedencies.
[Changelog] For PR #2934
Updated integration spec submodule.

Conflicts:
	spec/cocoapods-integration-specs