Merge remote-tracking branch 'origin/develop' into tizen

Merge remote-tracking branch 'origin/develop' into tizen

* origin/develop:
  DATABIND: syntax changes(switch -> if).
  DATABIND : Set expand & selection in the tree when it refreshed
  UIB : remove NPE
  ANIMATOR : Fixed bug timeline tree This bug is about timeline tree selection, tree expand, tree collapse.
  DATABIND: Refactoring SetSource dialog source. SetSourceDialog class rename to SetSourcePage in the org.tizen.webuibuilder.ui.views.databinding.dialog package. Split SetSourceDialog source code based on the setting panel to StaticSubPage, RemoteCallSubPage, RuntimeAPISubPage.
  ANIMATOR : Fixed Forward null This code do not check forward null.
  PROP : Fix null pointer exception. Fix null pointer exception.
  UIB : Remove possibe Error. Add defense  code for possible error by static analyzer.
  UIB : Fix null point exception on ThumbnailManager, HtmlMetaFileData, SnippetManager
  TEMPLATE : Modify CreateAction
  UIB : Add error handling check null dereference
  UIB : Add JUnit project for Unittest
  SNIPPET : Refactoring snippet
  SNIPPET : Remove old format snippets / templates
  UIB : Add error handling
  DATABIND : Remove resource leak
  UIB : Fix null point exception on CodeGenerator, PageDataSet

Conflicts:
	org.tizen.webuibuilder/src/org/tizen/webuibuilder/ui/views/databinding/DataBindingDnDManager.java

Change-Id: I16d3f90c3d9d390672e866763a39fdcbbd73382e
Signed-off-by: jinwooim.bae <jinwooim.bae@samsung.com>