* feat(wildfly removal): remove WildFly bundle from distrib

* Also remove CAS config module for WildFly

* Simplify structure, now that there is only Tomcat

Relates to [BR-158](https://bonitasoft.atlassian.net/browse/BR-158) &
[BR-159](https://bonitasoft.atlassian.net/browse/BR-159)

* feat(user application) user application artifact

- provide user application artifact containing application descriptor
- do not layout and theme as they are already maven dependencies

Covers [BPO-94](https://bonitasoft.atlassian.net/browse/BPO-94)

Previous implementation used a dedicated download mechanism: retrieve
them from download sites (but without checksum checks), cache them locally
and detect if they were available locally.

New implementation relies on the Maven dependency resolution. This
  - makes the pom simpler (no antrun task, nor dedicated caching), in particular
  remove dependency on ant-contrib
  - cache, checksum checks are deferred to Maven --> safer builds

In addition, fix community tomcat assembly (remove leading /) that were
useless and generated warning when building on windows

Plus some minor fixes:
  - fix warning generated by parent not in the root folder (set no relative
     path)
  - set encoding to UTF-8 for reproducible builds
  - wildfly bundle community: remove the deploy plugin configuration as
     it is managed at top level globally in the parent of the project and
     configured using a property set to not deploy the module
  - git ignore: correctly ignore node resources


Covers [BS-19060](https://bonitasoft.atlassian.net/browse/BS-19060)

* Ensure that the parent of the sp pom is the community pom
* duplicate maven-deploy-plugin config in parent pom else it doesn't work

* Ensure that the parent of the sp pom is the community pom
* duplicate maven-deploy-plugin config in parent pom else it doesn't work

This is the only resources required by the Studio and the Docker projects
so avoid to store extra resources (wildfly, themes, ...)

Relates to [CI-346](https://bonitasoft.atlassian.net/browse/CI-346)

Also centralize version management for slf4j-jdk14.

* feat(slf4j): bump slf4j from 1.6.1 -> 1.7.25

* update catalina conf in order not to scan too many jar files
* modify properties file to keep with previous tomcat format
  goes from
  "25-Jul-2017 14:29:17.192 INFO [localhost-startStop-1] org.bonitasoft.engine.log.technical.TechnicalLoggerSLF4JImpl.log THREAD_ID=29 | HOSTNAME=dolgonos-bonita | Start service of platform : 
  org.bonitasoft.engine.cache.ehcache.PlatformEhCacheCacheService"
  to
  "2017-07-25 14:22:09.092 +0200 INFO: org.bonitasoft.engine.api.impl.PlatformAPIImpl THREAD_ID=29 | HOSTNAME=dolgonos-bonita | Start service of platform : org.bonitasoft.engine.cache.ehcache.PlatformEhCacheCacheService"

Closes[BS-16921](https://bonitasoft.atlassian.net/browse/BS-16921)

Avoid loading of layout after each click on a navigation menu
- use an asset for HTML5 mode
- use history.pushState to update the URL
- listen to popState events to detect back
- rebuild Iframe on each URL change to prevent double back issue

Covers[BS-16623](https://bonitasoft.atlassian.net/browse/BS-16623)