Merge branch '3212-trim-white-space-at-start-and-end-when-creating-new-project' into 'master'

Trim project_path whitespace on form submit

## What does this MR do?

Trim leading/trailing whitespace on project_path input when focus leaves.

## Are there points in the code the reviewer needs to double check?

If tests are deemed necessary?

## Why was this MR needed?

To handle a reported bug #3212.

## Screenshots (if relevant)

## Does this MR meet the acceptance criteria?

- [x] [CHANGELOG](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/CHANGELOG) entry added
- [ ] [Documentation created/updated](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/doc/development/doc_styleguide.md)
- [ ] API support added
- Tests
  - [ ] Added for this feature/bug
  - [ ] All builds are passing
- [ ] Conform by the [merge request performance guides](http://docs.gitlab.com/ce/development/merge_request_performance_guidelines.html)
- [ ] Conform by the [style guides](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/CONTRIBUTING.md#style-guides)
- [x] Branch has no merge conflicts with `master` (if you do - rebase it please)
- [x] [Squashed related commits together](https://git-scm.com/book/en/Git-Tools-Rewriting-History#Squashing-Commits)

## What are the relevant issue numbers?


Closes #3212

See merge request !6710

CHANGELOG.md

@@ -2,6 +2,7 @@ Please view this file on the master branch, on stable branches it's out of date.
 
 ## 8.14.0 (2016-11-22)
   - Adds user project membership expired event to clarify why user was removed (Callum Dryden)
+  - Trim leading and trailing whitespace on project_path (Linus Thiel)
   - Fix HipChat notifications rendering (airatshigapov, eisnerd)
   - Simpler arguments passed to named_route on toggle_award_url helper method
 

app/views/projects/new.html.haml

@@ -127,6 +127,11 @@
     }
   });
 
+  $('#new_project').submit(function(){
+    var $path = $('#project_path');
+    $path.val($path.val().trim());
+  });
+
   $('#project_path').keyup(function(){
     if($(this).val().length !=0) {
       $('.btn_import_gitlab_project').attr('disabled', false);