Merge pull request #89 from didiepetrova/testing

update RadGridView
Updated Styles
Update SpreadProcessing formats and conversion info
RadRibbonView - articles checked and updated;
Updated a Docking article
Merge pull request #1 from telerik/testing

Getting latest
Updated X3 controls
Merge pull request #90 from APopatanasov/testing

Updated X3 controls
Updated PivotGrid article
RadDiagram: Update Layout Article
RadColorPicker: Predefined Palettes Preview section added in
New articles updated

The last commit from me contains a new articles for RadTimeline and
RadTimeBar, but I commit the changes with an incomplete message. Here is
upload small changes in the "see also" links in one of the articles
MaskedInput: Articles updates

223375: Correct the first sentence of the articles in the MaskedInput
Controls section
New image added and .md a file modified

-A missing image for the chart view documentation was added.
-A small change in the Create Custom Shape article fromt the RadDiagram
documentation
Updated GanttView article
Fix links pointing to wrong slug
Merge pull request #91 from didiepetrova/testing

RadDataFilter small fixes
Merge pull request #1 from telerik/testing

Testing