Merge branch 'add-irker-options' into 'master'

Add Irker service configuration options

### What does this MR do?

This MR makes a number of hard-coded Irker parameters configurable in the service settings: Irker server host, port, and default IRC URI. It also removes the "max recipient" limit since the recipient list is configurable only by the project owner, and it makes no sense to update the limit when it is implied in the recipient list already.

### Why was this MR needed?

The existing service assumed that gitlab.com was running an Irker daemon on `localhost` when it was not. Using Irker on gitlab.com thus did not work at all. This MR allows users to provide their own Irker daemons.

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

My main concern is whether allowing a user to specify the server/port combination would have security implications for a host. Given that HipChat and Slack allow users to do this, I didn't think this was doing anything novel.

### What are the relevant issue numbers?

* Closes #1713
* Closes #1714
* Closes gitlab-com/support-forum#139

### Screenshots

### Before

![image](https://gitlab.com/stanhu/gitlab-ce/uploads/2eb3eb815e249e9fb669fc97ecd4f3c8/image.png)

### After

![image](https://gitlab.com/gitlab-org/gitlab-ce/uploads/cceaba951c05bd3df2c842cc68046b87/image.png)

See merge request !930

1 files changed, 27 insertions, 22 deletions

diff --git a/doc/project_services/irker.md b/doc/project_services/irker.md
index 9875bebf66b..1dbca20baf9 100644
--- a/doc/project_services/irker.md
+++ b/doc/project_services/irker.md
@@ -9,38 +9,43 @@ See the project homepage for further info: https://gitlab.com/esr/irker
 ## Needed setup
 
 You will first need an Irker daemon. You can download the Irker code from its
-gitorious repository on https://gitorious.org/irker: `git clone
-git@gitorious.org:irker/irker.git`. Once you have downloaded the code, you can
-run the python script named `irkerd`. This script is the gateway script, it acts
-both as an IRC client, for sending messages to an IRC server obviously, and as a
-TCP server, for receiving messages from the GitLab service.
+repository on https://gitlab.com/esr/irker:
 
-If the Irker server runs on the same machine, you are done. If not, you will
-need to follow the firsts steps of the next section.
+```
+git clone https://gitlab.com/esr/irker.git
+```
 
-## Optional setup
+Once you have downloaded the code, you can run the python script named `irkerd`.
+This script is the gateway script, it acts both as an IRC client, for sending
+messages to an IRC server obviously, and as a TCP server, for receiving messages
+from the GitLab service.
 
-In the `app/models/project_services/irker_service.rb` file, you can modify some
-options in the `initialize_settings` method:
-- **server_ip** (defaults to `localhost`): the server IP address where the
-`irkerd` daemon runs;
-- **server_port** (defaults to `6659`): the server port of the `irkerd` daemon;
-- **max_channels** (defaults to `3`): the maximum number of recipients the
-client is authorized to join, per project;
-- **default_irc_uri** (no default) : if this option is set, it has to be in the
-format `irc[s]://domain.name` and will be prepend to each and every channel
-provided by the user which is not a full URI.
+If the Irker server runs on the same machine, you are done. If not, you will
+need to follow the firsts steps of the next section.
 
-If the Irker server and the GitLab application do not run on the same host, you
-will **need** to setup at least the **server_ip** option.
+## Complete these steps in GitLab:
+
+1. Navigate to the project you want to configure for notifications.
+1. Select "Settings" in the top navigation.
+1. Select "Services" in the left navigation.
+1. Click "Irker".
+1. Select the "Active" checkbox.
+1. Enter the server host address where `irkerd` runs (defaults to `localhost`)
+in the `Server host` field on the Web page
+1. Enter the server port of `irkerd` (e.g. defaults to 6659) in the
+`Server port` field on the Web page.
+1. Optional: if `Default irc uri` is set, it has to be in the format
+`irc[s]://domain.name` and will be prepend to each and every channel provided
+by the user which is not a full URI.
+1. Specify the recipients (e.g. #channel1, user1, etc.)
+1. Save or optionally click "Test Settings".
 
 ## Note on Irker recipients
 
 Irker accepts channel names of the form `chan` and `#chan`, both for the
 `#chan` channel. If you want to send messages in query, you will need to add
-`,isnick` avec the channel name, in this form: `Aorimn,isnick`. In this latter
+`,isnick` after the channel name, in this form: `Aorimn,isnick`. In this latter
 case, `Aorimn` is treated as a nick and no more as a channel name.
 
 Irker can also join password-protected channels. Users need to append
 `?key=thesecretpassword` to the chan name.
-