Remove some markdown, images and notebooks from the docs/ directory. …

…Update links.
JetBrains · alshan · Sep 28, 2021 · Feb 16, 2021 · Feb 25, 2021 · Feb 26, 2021
commit a9980045462bd7624dca2666a4958b340c7993fc
diff --git a/CHANGELOG.md b/CHANGELOG.md
@@ -13,14 +13,14 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
  * `order_by` (string) - the name of the variable by which the ordering will be performed;
  * `order` (int) - the ordering direction - 1 for ascending direction and -1 for descending (default value).
 
- See: [as_discrete](https://github.com/JetBrains/lets-plot/blob/master/docs/as_discrete.md).
+ See: [as_discrete](https://lets-plot.org/pages/as_discrete.html).
 
 - Basemap tiles configuring:
  - Subdomains parameter `{s}` for XYZ raster tiles.
  - Solid color tiles: `maptiles_solid()`.
  - Builtin configurations for some 3rd party maptile services. The `lets_plot.tilesets` module.
 
- See: [Configuring basemap tiles](https://github.com/JetBrains/lets-plot/blob/master/docs/basemap_tiles.md).
+ See: [Configuring basemap tiles](https://lets-plot.org/pages/basemap_tiles.html).
 
 ### Changed
 
@@ -70,7 +70,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 - In tooltip customization API:
  - `layer_tooltips(variables)` - the new parameter `variables` defines a list of variable names, which values will be placed line by line in the general tooltip.
- See: [Tooltip Customization](https://github.com/JetBrains/lets-plot/blob/master/docs/tooltips.md).
+ See: [Tooltip Customization](https://lets-plot.org/pages/tooltips.html).
 
 ### Changed
 

diff --git a/README.md b/README.md
@@ -73,14 +73,14 @@ Also read:
  - `order_by` (string) - the name of the variable by which the ordering will be performed;
  - `order` (int) - the ordering direction: 1 for ascending direction and -1 for descending (default).
 
- See: [as_discrete](https://github.com/JetBrains/lets-plot/blob/master/docs/as_discrete.md).
+ See: [as_discrete](https://lets-plot.org/pages/as_discrete.html).
 
 - Interactive maps:
 
  - Pre-configured raster tilesets in new `lets_plot.tilesets` module.
  - Builtin blank maptiles.
 
- See: [Configuring basemap tiles](https://github.com/JetBrains/lets-plot/blob/master/docs/basemap_tiles.md).
+ See: [Configuring basemap tiles](https://lets-plot.org/pages/basemap_tiles.html).
 
 ## Change Log
 

diff --git a/docs/as_discrete.md b/docs/as_discrete.md
diff --git a/docs/basemap_tiles.md b/docs/basemap_tiles.md
diff --git a/docs/basemaps.jpg b/docs/basemaps.jpg
diff --git a/docs/examples/images/as_discrete_1.png b/docs/examples/images/as_discrete_1.png
diff --git a/docs/examples/images/as_discrete_10.png b/docs/examples/images/as_discrete_10.png
diff --git a/docs/examples/images/as_discrete_11.png b/docs/examples/images/as_discrete_11.png
diff --git a/docs/examples/images/as_discrete_2.png b/docs/examples/images/as_discrete_2.png
diff --git a/docs/examples/images/as_discrete_3.png b/docs/examples/images/as_discrete_3.png
diff --git a/docs/examples/images/as_discrete_4.png b/docs/examples/images/as_discrete_4.png
diff --git a/docs/examples/images/as_discrete_5.png b/docs/examples/images/as_discrete_5.png
diff --git a/docs/examples/images/as_discrete_6.png b/docs/examples/images/as_discrete_6.png
diff --git a/docs/examples/images/as_discrete_7.png b/docs/examples/images/as_discrete_7.png
diff --git a/docs/examples/images/as_discrete_8.png b/docs/examples/images/as_discrete_8.png
diff --git a/docs/examples/images/as_discrete_9.png b/docs/examples/images/as_discrete_9.png
diff --git a/docs/examples/images/logo_colab.svg b/docs/examples/images/logo_colab.svg
diff --git a/docs/examples/images/logo_datalore.svg b/docs/examples/images/logo_datalore.svg
diff --git a/docs/examples/images/logo_deepnote.svg b/docs/examples/images/logo_deepnote.svg