Fix bug where Wiki pages that include a '/' were no longer accessible
### What does this MR do?
This MR fixes a regression that caused Wiki pages that included a '/' to no longer be accessible.
### Are there points in the code the reviewer needs to double check?
Are there cases that `wiki_helper.rb` doesn't handle?
### Why was this MR needed?
The upgrade from Rails v4.1.2 to v4.1.9 (76aad9b76e) caused slashes in a model ID to be escaped automatically. We can no longer use the built-in the URL helpers to generate the links for Wiki pages if we want to maintain support for slashes. There is no option to tell the formatter otherwise:
http://stackoverflow.com/questions/25031791/rails-4-1-2-to-param-escapes-slashes-and-breaks-app
The Rails code in question is here:
https://github.com/rails/rails/blob/4-1-stable/actionpack/lib/action_dispatch/journey/visitors.rb#L159
### What are the relevant issue numbers / [Feature requests](http://feedback.gitlab.com/)?
#1363
See merge request !502
Move project file links to tab bar.
The sidebar was getting awfully crowded, so I moved the file links to the tab bar alongside Activity and Readme. Unlike Readme, these files are not actually loaded in a tab, but simply link to the relevant blob, because we don't want to unnecessarily load the potentially large changelog or contribution guide on every project page load.

See merge request !497
Corrected steps for creating a patch release
Added step to bump all versions (CE, EE, CI) every time there is a patch release and the reasoning behind it
See merge request !1754
Add ability to configure Reply-To address
### What does this MR do?
This MR adds configuration variable `email_reply_to` to make it possible to configure a custom Reply-To address other than the default `noreply@mydomain.com`.
### What are the relevant issue numbers / [Feature requests](http://feedback.gitlab.com/)?
#1305
See merge request !455
Changes the width of sidebar in issues and MRs when affix event fires
Fixes#1320
Width is set when Bootstraps affix event is fired and then removed when it reaches the top or bottom.
See merge request !464
Exposing Project Labels in the REST API
The intent here is to expose the tag_list property of the Project entity over the REST API so that any project searches include the information. The specific reason I've implemented this change is for an environment in which multiple gitlab servers exist, where a central portal to the projects that are spread around the network will be useful. Having access to filtering on this fairly large project list based on their labels, will be of great use.
This satisfies the feature request http://feedback.gitlab.com/forums/176466-general/suggestions/6325819-project-labels-via-api
The change was made in the `lib/api/entities.rb` file.
The output of a `GET` to something like `/projects` or `/projects/7` is now:
```javascript
{
"id": 7,
"description": "Veritatis est eaque voluptas magni expedita.",
"default_branch": "master",
**"tag_list": [
"typeahead",
"twitter"
],**
"public": false,
"archived": false,
"visibility_level": 0,
...
}
```
See merge request !329
Improve regexp to prevent false positives
If a filename happened to contain "db" and enough "rwx" characters before, then
this test would previously fail. For example:
```
drwxr-xr-x gitlab-runner/gitlab-runner 0 2015-04-02 07:46 uploads/tmp/cassidy.stokes8477/gitlabhq/36d972fa55d6b44810fc6fd843473adb/
```
Adding a space before the "db" match string tightens up the regexp and reduces the
chance of an unintended match.
See merge request !489
Support configurable attachment size in Application Settings page
### What does this MR do?
This MR provides the ability to configure the maximum size of an attachment inside a note. A parameter has been added to the Application Settings page.
### Are there points in the code the reviewer needs to double check?
What should be done with the legacy note attachment validation? I added code to make the validation work with the configurable setting. I could see an issue where an admin lowers the limit from 10 megabytes to 5 megabytes, which could cause an existing model to be invalid.
### Why was this MR needed?
We often have attachments that exceed 10 MB, and it would be nice to be able to override the defaults.
### What are the relevant issue numbers / [Feature requests](http://feedback.gitlab.com/)?
See Issue #1258
### Screenshots
Before:

After:

See merge request !407
Updated projects.md to show tag_list field when performing GETs
Updated projects_spec.rb to include check for tag_list key in project list
Added changes to the CHANGELOG
Import GitHub, Bitbucket or GitLab.com projects owned by authenticated user into current namespace.
Addresses #1347.
Untested since I'm in a bit of a hurry. Will definitely have time to test and add unit tests before the 7.10 release :)
See merge request !481