### What is this PR for?
This is a small refactoring to keep this Controller following the [ControllerAs with vm](https://github.com/johnpapa/angular-styleguide/tree/master/a1#controlleras-with-vm)
rules, that it was based on.

Here is a list of things that were changed and why:

* Most of the controller's $scope values & fct (except from the search q) where moved to the vm.The controller is using vm, so storing in $scope to share with the view is not needed.

* Functions or Vars that are not used in the view were removed from the vm. (kept private to the controller)

* $rootscope functions was moved to `app.js`. I think  the need for that function might need to be changed, but for the scope of this PR, we are just moving it to where the $rootScope values are declared.

* Gathering vm declaration before the functions and ordered alphabetically

* Re-order functions alphabetically

* Create `initController ` to regroup all the controller setup.

### What type of PR is it?
Refactoring

### What is the Jira issue?
https://issues.apache.org/jira/browse/ZEPPELIN-1290

### How should this be tested?
You can Just verify that the below Navbar related features are still good:
* Search Form
* Connected Status
* Login button
* User Name and its dropdown menu
* Notebook list drop-down menu (and filer, folder inside of it)

### Questions:
* Does the licenses files need update? No
* Is there breaking changes for older versions? No
* Does this needs documentation? No

Author: Damien CORNEAU <[email protected]>
Author: CORNEAU Damien <[email protected]>
Author: Prabhjyot Singh <[email protected]>

Closes apache#1281 from corneadoug/Refactor/navbarCtrl and squashes the following commits:

31f9110 [CORNEAU Damien] Merge pull request #4 from prabhjyotsingh/logoutUserFix
4686a18 [Prabhjyot Singh] CI failure for testGroupPermission
2fde749 [Damien CORNEAU] finish cleaning the controller
be18547 [Damien CORNEAU] Remove  functions from navbar controller

### What is this PR for?
Adding extra libraries to livy interpreter which isn't exist by default.

### What type of PR is it?
[ Improvement ]

### Todos
* [Test case ] - Task

### What is the Jira issue?
*  [ZEPPELIN-1258]

### How should this be tested?
- Create new livy interpreter or modify the default.
- Set `livy.spark.jars.packages` to list of maven coordinates of jars. The format for the coordinates should be groupId:artifactId:version.

### Screenshots (if appropriate)
![](https://s31.postimg.org/px78l7ql7/Screenshot_from_2016_08_03_16_59_00.png)
![](https://s32.postimg.org/96ucb5rb9/Screenshot_from_2016_08_03_17_00_30.png)

### Questions:
* Does the licenses files need update? no
* Is there breaking changes for older versions? no
* Does this needs documentation? yes

Author: mahmoudelgamal <[email protected]>
Author: mfelgamal <[email protected]>
Author: Fouad <[email protected]>

Closes apache#1255 from mfelgamal/feature/modifying-livy-doc and squashes the following commits:

5411a2f [mahmoudelgamal] changeing default to example
d7f6818 [mahmoudelgamal] Adding livy.spark.jars.packages property
98090ab [mahmoudelgamal] Adding external libraries to livy
03a1e80 [mfelgamal] Merge pull request #4 from apache/master
2586651 [Fouad] Merge pull request #2 from apache/master

## What is this PR for?
The PR is a interpreter for [Apache Beam](http://beam.incubator.apache.org) which is an open source unified platform for data processing pipelines. A pipeline can be build using one of the Beam SDKs.
The execution of the pipeline is done by different Runners . Currently, Beam supports Apache Flink Runner, Apache Spark Runner, and Google Dataflow Runner.

### What type of PR is it?
- Feature

### Todos
* Test case
* Review Comments
* Documentation

### What is the Jira issue?
* [ZEPPELIN-682]

### How should this be tested?
- Start the Zeppelin server
- The prefix of interpreter is `%beam` and then write your code with required imports and the runner

### Screenshots (if appropriate)
![](https://s9.postimg.org/s6eiwrbxb/beam_interpreter.png)
![](https://s9.postimg.org/eq3h8wsrz/visualisation_with_table.png)

### Questions:
* Does the licenses files need update? no
* Is there breaking changes for older versions? no
* Does this needs documentation? yes

Author: mahmoudelgamal <[email protected]>
Author: mfelgamal <[email protected]>
Author: Fouad <[email protected]>

Closes apache#1334 from mfelgamal/beam-interpreter-static-repl-7 and squashes the following commits:

da66c27 [mahmoudelgamal] Modify condition of checking static modifier
55c1322 [mahmoudelgamal] set spark version to 1.6.2 and throw original exception
27d7690 [mahmoudelgamal] set spark version to 1.6.1 and some modifications
750041c [mahmoudelgamal] Add readme file and modify pom file and travis.yml
ca88f94 [mahmoudelgamal] edit pom file and .travis.yml
3d65427 [mahmoudelgamal] update .travis.yml file
f19f98d [mahmoudelgamal] Make easy example with imports ands some modifications
74c14ca [mahmoudelgamal] Update the licenses
acc7afb [mahmoudelgamal] Change beam to version 0.2.0
e821614 [mahmoudelgamal] Removing hadoop-core and print stack trace to failure
5cb7c7b [mahmoudelgamal] Add some changes to doc and pom file
75fc4f7 [mahmoudelgamal] add interpreter to navigation.html and remove extra spaces and lines
9b1b385 [mahmoudelgamal] put beam in alphabetical order
9c1e25d [mahmoudelgamal] Adding changes like logging and conventions and license
2aa6d65 [mahmoudelgamal] changing class name to StaticRepl and adding some modifications
7cf25fb [mahmoudelgamal] Adding some tests
3c5038f [mahmoudelgamal] Modifying the documentation
5695077 [mahmoudelgamal] Modifying pom file and Making documentation
26fc59b [mahmoudelgamal] Refactoring of the code
3a2bd85 [mahmoudelgamal] Adding the beam to zeppelin 7
ab7ee2d [mahmoudelgamal] beam interpreter
85957ff [mfelgamal] Merge pull request apache#10 from apache/master
852c3d3 [mfelgamal] Merge pull request apache#9 from apache/master
a4bcc0d [mfelgamal] Merge pull request apache#8 from apache/master
858f1e1 [mfelgamal] Merge pull request apache#7 from apache/master
03a1e80 [mfelgamal] Merge pull request #4 from apache/master
2586651 [Fouad] Merge pull request #2 from apache/master