Added new template with demo and quick install.

Added template demo and quick install. The template is implemented with the ability to change the color scheme in the design editor.
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Install template.

Added new template with demo and quick install.

Added the ability to set a limit for entries in child subcategories.An automatic set of goals has been added to track the conversion of sites created on the BooStoreAdditional optimization of Database queries and acceleration of the platform have been performed.