[DMU] Refactor + clear code. Update clipping to get a better range to display and share it in co-browsing mode.
Merge branch 'dev' of github.com:docdoku/docdoku-plm into dev

Conflicts:
	docdoku-server/docdoku-server-web/src/main/java/com/docdoku/server/mainchannel/collaborative/CollaborativeRoomController.java
	docdoku-server/docdoku-server-web/src/main/webapp/js/product-structure/app.js
	docdoku-server/docdoku-server-web/src/main/webapp/js/product-structure/frameApp.js
	docdoku-server/docdoku-server-web/src/main/webapp/js/product-structure/views/parts_tree_view.js
	docdoku-server/docdoku-server-web/src/main/webapp/js/websocket/websocket.js
	docdoku-server/docdoku-server-web/src/main/webapp/product-structure/frame.xhtml
	docdoku-server/docdoku-server-web/src/main/webapp/product-structure/index.xhtml
init Libgdx integration, init gradle project, init refactoring
libGDX integration, Gradle integration, some refactor. Prepared for push.
Add "nativeCADFile" info in JSON return (InstanceMessageBodyWriter).
Add @XmlElement(nillable = true) to attributes needed for JSON parsing
remove gen
gitignore
removing .gradle folder
refactor : naming convention, deleted unused files, UI changes
fixed some bugs : upload images failed; changing status did not refresh data; loading history crashed; and minor bugs
Added some icons. Changed CursorLoader import (use android.content.CursorLoader; instead of android.support.v4.content.CursorLoader;)
Merge branch 'dplm3d' of github.com:docdoku/docdoku-plm into dplm3d

Conflicts:
	docdoku-android-client/.gitignore
	docdoku-android-client/AndroidManifest.xml
	docdoku-android-client/res/layout/activity_connection.xml
	docdoku-android-client/res/layout/activity_gdxactivity.xml
	docdoku-android-client/res/values-fr/strings.xml
	docdoku-android-client/res/values/strings.xml
	docdoku-android-client/src/com/docdoku/android/plm/client/ElementActivity.java
	docdoku-android-client/src/com/docdoku/android/plm/client/MenuFragment.java
	docdoku-android-client/src/com/docdoku/android/plm/client/SearchActivity.java
	docdoku-android-client/src/com/docdoku/android/plm/client/SimpleActionBarActivity.java
	docdoku-android-client/src/com/docdoku/android/plm/client/connection/ConnectionActivity.java
	docdoku-android-client/src/com/docdoku/android/plm/client/documents/DocumentActivity.java
	docdoku-android-client/src/com/docdoku/android/plm/client/documents/DocumentAdapter.java
	docdoku-android-client/src/com/docdoku/android/plm/client/documents/DocumentCompleteListActivity.java
	docdoku-android-client/src/com/docdoku/android/plm/client/documents/DocumentFoldersActivity.java
	docdoku-android-client/src/com/docdoku/android/plm/client/documents/DocumentHistoryListActivity.java
	docdoku-android-client/src/com/docdoku/android/plm/client/documents/DocumentSimpleListActivity.java
	docdoku-android-client/src/com/docdoku/android/plm/client/gdx/GDXActivity.java
	docdoku-android-client/src/com/docdoku/android/plm/client/parts/Part.java
	docdoku-android-client/src/com/docdoku/android/plm/client/parts/PartActivity.java
	docdoku-android-client/src/com/docdoku/android/plm/client/parts/PartCompleteListActivity.java
	docdoku-android-client/src/com/docdoku/android/plm/client/parts/PartHistoryListActivity.java
	docdoku-android-client/src/com/docdoku/android/plm/client/parts/PartListActivity.java
	docdoku-android-client/src/com/docdoku/android/plm/client/parts/PartSimpleListActivity.java
	docdoku-android-client/src/com/docdoku/android/plm/client/users/UserListActivity.java
	docdoku-android-client/src/com/docdoku/android/plm/network/HTTPResultTask.java