Add maven back & front build integration

[MatiasComercio]

Summary

• Add frontend-maven-plugin
• Add url path mandatory parameter on both maven package
  and grunt build processes
• Add 'dist' directory (front build folder) to war file
  • This was accomplished by adding this folder to the maven package
    lifecycle
• Fix Spring filter to match API paths only (/api/v1/*)
  • Frontend filter will be done with frontend tools
• Update Gruntfile.js
  • Update jsrev task to load requirejs components (controllers,
    services and directives) based on the specified path where the app
    will be deployed (for example, '/' or '/grupo1')
  • Fix some Gruntfile issues
  • Requirejs module packager not updated. See Notes (2) for more information
• Update views paths on both routes.js and directives' templateUrl field
  • Update absolute paths ('/views/home.html') to relative paths
    ('views/home.html')
• Update karma configuration file
  • Genereate symlink inside app's folder pointing to bower_components
    folder when running karma start. See Notes (1) for more information
• Update README.md
• Fix logger
  • It was on DEBUG level. jpascale changed this and mmercado approved
    its PR. We have to be careful about this changes.
• Update WebConfig parameters for stage deploy
• Exclude dependency from main's pom
  • This dependency is excluded to avoid the following warning from the
    Tomcat server:
    INFO:validateJarFile(/home/matias/Programs/apache-tomcat-7.0.68/
    webapps/grupo1/WEB-INF/lib/javax.el-api-2.2.4.jar)- jar not loaded.
    See Servlet Spec 3.0, section 10.7.2.
    Offending class:javax/el/Expression.class

Notes

(1) Genereate symlink inside app's folder pointing to bower_components
folder when running karma start.

Why do we need this?
basePath is used as a starting path for all other paths inside this
config file.
For example, with the following config
basePath: 'app', files: [{pattern: index.js}, {pattern: ../other.js}],
port: 9876
the files that will be match will be
'<project_path>/app/index.html'
'<project_path>/other.html'

However, the files will be served as:
http://localhost:9876/base/index.js
http://localhost:9876/absolute/absoultePathToProject/other.js

Due to we need to set basePath to 'app' to be able to test directives
with templateUrl,
and to avoid the case of the 'other.js' example of above with
bower_components, we need
to make reference to the bower_components folder somehow.
This 'somehow' was resolved to be a symlink.

(2) Requirejs module packager not updated

Test setting Gruntfile.js's requirejs:compile:options:modules also
with the following values:
{name:'controllers/BodyCtrl'},
{name: 'controllers/HomeCtrl'},
{name: 'controllers/LoginCtrl'}
so as to compress all related files. However, this was causing some
.js files to be merged with all of this files (like angular.js)
and this increased each of these files sizes, doing the contrary
effect that it was being looked for (speed up loading time).

That's why it was decided to left the Gruntfile.js as it was.

Trello Cards

• https://trello.com/c/SUMF1u8r/32-configurar-build-maven-grunt
• https://trello.com/c/Axco7kE4/33-hacer-el-primer-deploy

[MatiasComercio]

Just this :D

[MatiasComercio]

This is not used. Remove it.