Upgrade gitlab_git to 7.2.14 to ignore CRLFs in .gitmodules

Closes #2262

See merge request !1171

Closes #2262

Remove the `gfm_with_options` helper

It was redundant because `gfm` also took options.

See merge request !1152

Fix bug where backslashes in inline diffs could be dropped

This MR fixes a bug in inline diff generation causing backslashes to be dropped. For example, the input:

```
input.to_s.sub(/[\r\n].+/,'').sub(/\\[rn].+/, '').strip
```

The second backslash is dropped in the second `sub` statement:

![image](https://gitlab.com/gitlab-org/gitlab-ce/uploads/16e513894f7ecda1b111fe7d43e7f388/image.png)

With this fix, it looks like:

![image](https://gitlab.com/gitlab-org/gitlab-ce/uploads/90fd635a937a68f1b2403740ebc75e3a/image.png)

Closes #2253

See merge request !1143

Improve error message display when project fails to import

Follow-up to !1134.

New screenshot:

![image](https://gitlab.com/stanhu/gitlab-ce/uploads/c1a8ffa30ab3b78010e16cf65c2ff438/image.png)

See merge request !1138

Revert "Fix for #9527"

Installation and update guides for 7.14

cc @rspeicher

See merge request !1168

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

Require Ruby 2.1.0 in `gitlab:app:check` task

See merge request !1165

[ci skip]

Update changelog for MR !1124

@dzaporozhets

See merge request !1164

Signed-off-by: Sven Strickroth <email@cs-ware.de>

Bump omniauth-saml to 1.4.1

Updates a vulnerable `ruby-saml` dependency.

- https://github.com/onelogin/ruby-saml/commit/9853651b96b99653ea8627d757d46bfe62ab6448
- https://github.com/onelogin/ruby-saml/pull/247

See merge request !1162

Updates a vulnerable `ruby-saml` dependency.

- https://github.com/onelogin/ruby-saml/commit/9853651b96b99653ea8627d757d46bfe62ab6448
- https://github.com/onelogin/ruby-saml/pull/247

Fix redirection after sign in when using auto_sign_in_with_provider

Logic for redirect path moved to a filter. This allows it to run properly when the auto_sign_in_with_provider filter takes control.

See merge request !1146

Workaround the insecure password warnings emitted by MySQL 5.6

When using MySQL 5.6, the following output is emitted every time a backup is created, even with CRON=1.

```
Warning: Using a password on the command line interface can be insecure.
```

This fix works around that by sending the password via the [`MYSQL_PWD`](http://dev.mysql.com/doc/refman/5.6/en/environment-variables.html) environment variable.

See merge request !1139

Fix for #9527

Update Flowdock integration to support new Flowdock API

Requires that users create a Git source in their flows and update the configured token to the Git source token. The old flow tokens can't be used.

Disable internal issue tracker if external tracker in use

### What does this MR do?

This MR disables routes to the internal issue tracker if an external issue tracker (e.g. Redmine) is in use. A 404 page is returned if a user attempts to access any of the issue routes.

### Why was this MR needed?

Enabling the external issue tracker would still keep the internal one active, which would lead to odd behavior where users could create issues but not close them.

### What are the relevant issue numbers?

Closes #2006

See merge request !993

Set max-width for README, issue and merge request description

It allows easier text reading on big screens

### Problem

Text is hard to read on wide screens:

![Screenshot_2015-08-14_11.33.39](https://gitlab.com/gitlab-org/gitlab-ce/uploads/2bdb092c09495c7aa94b0589df4b7e65/Screenshot_2015-08-14_11.33.39.png)

### Solution

Set max-width to content. Screenshots:

![Screenshot_2015-08-14_11.31.54](https://gitlab.com/gitlab-org/gitlab-ce/uploads/00cd7a77b81b30458a1675ec562d7463/Screenshot_2015-08-14_11.31.54.png)
![Screenshot_2015-08-14_10.53.16](https://gitlab.com/gitlab-org/gitlab-ce/uploads/4756f87a3bbb7179e55b1c8f8ee40459/Screenshot_2015-08-14_10.53.16.png)
Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

See merge request !1161

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

It allows easier text reading on big screens
Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

Fix: User search feature in admin area does not respect filters

https://dev.gitlab.org/gitlab/gitlabhq/issues/2482

See merge request !1155

Fix changelog

New doc about how to add an image in GitLab Basics

See merge request !1918

Time for 7.14.0.pre

Provide more feedback what went wrong if HipChat service failed test

This MR adds support for displaying the error message during HipChat service test. Before an Error 500 would be displayed with no helpful remarks.

Screenshot:

![image](https://gitlab.com/stanhu/gitlab-ce/uploads/10f82eb02db138f9680e69cdb3d3ed82/image.png)

Issue gitlab-com/support-forum#213

See merge request !1144

Bring clone bar back

Screenshot:

![image](https://gitlab.com/stanhu/gitlab-ce/uploads/5198a110c1f1bfd5b6b050b648e8ad45/image.png)

See discussion in !1080

See merge request !1147

Update changelog

See merge request !1153