Merge branch '25207-text-overflow-env-table' into 'master'

Prevent enviroment table to overflow when name has underscores

## What does this MR do?
Improves columns width
Prevents columns content to overflow to other columns

## Screenshots 
![Screen_Shot_2016-12-16_at_12.27.14](/uploads/69332e43087bf2bf3a546934700a6b31/Screen_Shot_2016-12-16_at_12.27.14.png)

## Does this MR meet the acceptance criteria?

- [ ] [Changelog entry](https://docs.gitlab.com/ce/development/changelog.html) 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
- [x] Conform by the [merge request performance guides](http://docs.gitlab.com/ce/development/merge_request_performance_guidelines.html)
- [x] 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 it does - rebase it please)
- [ ] [Squashed related commits together](https://git-scm.com/book/en/Git-Tools-Rewriting-History#Squashing-Commits)

## What are the relevant issue numbers?
Closes #25207

See merge request !8142

2 files changed, 11 insertions, 5 deletions

diff --git a/app/assets/javascripts/environments/components/environment_item.js.es6 b/app/assets/javascripts/environments/components/environment_item.js.es6
index 2e046a60146..4674d5202e6 100644
--- a/app/assets/javascripts/environments/components/environment_item.js.es6
+++ b/app/assets/javascripts/environments/components/environment_item.js.es6
@@ -449,7 +449,7 @@
           </span>
         </td>
 
-        <td>
+        <td class="environments-build-cell">
           <a v-if="shouldRenderBuildName"
             class="build-link"
             :href="model.last_deployment.deployable.build_path">
diff --git a/app/assets/stylesheets/pages/environments.scss b/app/assets/stylesheets/pages/environments.scss
index 92dd9885ab8..3d60426de01 100644
--- a/app/assets/stylesheets/pages/environments.scss
+++ b/app/assets/stylesheets/pages/environments.scss
@@ -30,19 +30,25 @@
     display: table-cell;
   }
 
+  .environments-name,
   .environments-commit,
   .environments-actions {
     width: 20%;
   }
 
-  .environments-deploy,
-  .environments-build,
   .environments-date {
     width: 10%;
   }
 
-  .environments-name {
-    width: 30%;
+  .environments-deploy,
+  .environments-build {
+    width: 15%;
+  }
+
+  .environment-name,
+  .environments-build-cell,
+  .deployment-column {
+    word-break: break-all;
   }
 
   .deployment-column {