Kendo scripts have no splitted files.
It's necessary to attach css-files in the following order (for bootstrap usage):
kendo.common-bootstrap.min.css
kendo.bootstrap.min.css

Minified versions of styles got from telerik CDN:
http://kendo.cdn.telerik.com/2016.1.226/styles/kendo.common-bootstrap.min.css
http://kendo.cdn.telerik.com/2016.1.226/styles/kendo.bootstrap.min.css
http://kendo.cdn.telerik.com/2016.1.226/styles/kendo.blueopal.min.css
see details at: http://docs.telerik.com/kendo-ui/intro/installation/cdn-service

The folder, where css-files are located, must also contain folders for images and textures, used by kendo styles:
blueopal
bootstrap
textures
see link for details: http://www.telerik.com/blogs/which-css-files-to-use-in-your-kendo-ui-project
Bundles for reporting styles are located at virtual path: styles/kendo/<bundle_name>
So, textures and theme images must be located at the same path in the app's Visual studio project.
Because reporting styles have links to image resources (glyphs, textures and background images).

Blueopal theme now used by reports at Index.cshtml with kendo UI controls.
New criteria for reports (at index2.cshtml) uses app standard bootstrap theme.