Jira Development Panel Integration docs V1

doc/integration/jira_development_panel.md

+# GitLab JIRA Development Panel integration
+
+As an extension to our [existing JIRA][existing-jira] project integration, you're now able to integrate
+all your GitLab projects with [JIRA Development Panel][jira-development-panel].
+
+By doing this you can easily monitor new Branches, Commits and Merge Requests directly on a Jira issue.
+
+>**Note:**
+Our current integration supports Branches and Commits, but we're eagerly looking forward to extend this functionality.
+
+We have split the setup in a few steps so it is easier to follow.
+
+
+## On GitLab
+
+1. Create a new Application in order to allow Jira to connect with your GitLab account
+
+	Logged-in on GitLab, go to `Settings -> Applications`
+
+	![GitLab Application setup](img/jira_dev_panel_gl_setup_1.png)
+
+	- Make sure to replace the `Redirect URI` HOST by your's (or `gitlab` in case you're using GitLab.com)
+	- Make sure the logged-in user on GitLab has access to the projects you want to import to Jira.
+	- Only the `api` scope needs to be checked
+
+2. Save the generated 'Application id' and 'Secret', you'll need this information when configuring Jira.
+
+
+## On Jira
+
+1. Go to `Application -> DVCS accounts` and click on `Link GitHub account`
+
+	![Jira DVCS from Dashboard](img/jira_dev_panel_jira_setup_1.png)
+
+2. Provide the required information
+
+	![Creation of Jira DVCS integration](img/jira_dev_panel_jira_setup_2.png)
+	
+	- Make sure to replace the `Host URL` HOST by your's (keeping the rest of the URL `/-/jira` unchanged)
+	- Paste the `Application id` provided by GitLab on `Client ID` 
+	- Paste the `Secret` provided by GitLab on `Client Secret` 
+	
+	>**Note:**
+	In case you have multiple groups with projects that you want to import, you'll follow this process for each one of these groups. 
+	So let's say your username on GitLab is 'mytest', but you have another group called 'group-a'. In order to import
+	your projects ('mytest') and all projects within 'group-a', you'll create one integration providing 'mytest' as 'Team or User Account' and 	another one providing 'group-a'.
+
+	
+3. Click `Add` and finish the authorization process
+
+	At that point you're done! All Projects Branches and Commits (within the configured groups) referring your Jira issues will be automatically
+	imported.
+	
+	The import process can take a few seconds (or minutes) depending on how many projects and commits you have on GitLab.
+	
+	>**Note:**
+	Jira automatically fetches your GitLab instance looking for new projects and referenced branches and projects in a 60 minute interval.
+	
+
+You can now see the linked `branches` and `commits` when entering a Jira issue.
+
+![Branch and Commit links on Jira issue](img/jira_dev_panel_jira_setup_3.png)
+
+Click these links for more information.
+
+![GitLab commit details on a Jira issue](img/jira_dev_panel_jira_setup_4.png)
+
+
+[existing-jira]: ../user/project/integrations/jira.md
+[jira-development-panel]: https://confluence.atlassian.com/adminjiraserver070/integrating-with-development-tools-776637096.html#Integratingwithdevelopmenttools-Developmentpanelonissues