Group level webhooks

Should be reported (#233)

![Screen_Shot_2015-03-12_at_19.10.08](https://dev.gitlab.org/gitlab/gitlab-ee/uploads/9200ae766cb895151750447a167aa5a4/Screen_Shot_2015-03-12_at_19.10.08.png)

See merge request !348

separate documentation for rebase before merge

fixes https://dev.gitlab.org/gitlab/gitlabhq/issues/2108

See merge request !350

Ce upstream

See merge request !349

Conflicts:
	app/assets/stylesheets/generic/nav_sidebar.scss

Group controllers refactoring

Usefulness of this refactoring is not so obvious on CE codebase. But It will allow us to remove huge amount of code on the EE side.

See merge request !1684

CE to EE

cc @marin

See merge request !347

Allow smb:// links in Markdown text.

As requested by Sam McLeod at https://gitlab.com/gitlab-org/gitlab-ce/issues/1184

See merge request !1669

Update html-pipeline and emoji

See merge request !1680

Conflicts:
	Gemfile.lock
	app/controllers/uploads_controller.rb
	app/models/application_setting.rb
	app/models/project_services/issue_tracker_service.rb
	app/views/projects/services/_form.html.haml
	db/schema.rb
	doc/integration/README.md
	features/steps/groups.rb

Conflicts:
	Gemfile.lock

add AMI update step

See merge request !1677

Remove annoying notice messages when create/update merge request

See merge request !1681

Bump gitlab_git to v7.1.0. It should fix a lot of encoding issues

For gitlab/gitlab_git!24

See merge request !1679

Escape wildcards when searching LDAP by group name.

Addresses https://dev.gitlab.org/gitlab/gitlabhq/issues/2086.

Also see https://dev.gitlab.org/gitlab/gitlabhq/merge_requests/1644 and https://dev.gitlab.org/gitlab/omniauth-ldap/merge_requests/2.

See merge request !344

 Fix code preview theme setting for comments, issues, merge requests, and snippets

User color scheme was not being used: default white color scheme was always chosen. Also, default background for code in notes was always overriding the user color scheme.

Closes #1139

See merge request !357

Escape wildcards when searching LDAP by username.

Addresses https://dev.gitlab.org/gitlab/gitlabhq/issues/2086.

Also see https://dev.gitlab.org/gitlab/gitlab-ee/merge_requests/344 and https://dev.gitlab.org/gitlab/omniauth-ldap/merge_requests/2.

See merge request !1644

Remove placeholder methods to prevent calling methods rather than attributes.

Since we have https://dev.gitlab.org/gitlab/gitlabhq/blob/7-8-stable/app/models/service.rb#L79 makes no sense to have methods as a placeholder.

See merge request !1676

Dashboard restyle

For #2069

See merge request !1675

Generate valid json

This patch helps to be compatible to other programing languages as it improves the validation of hook data. It seems only ruby can handle 'nil' as value while other json decode function will fatal.

See merge request !182