Webpanel design fixes (#20)

* Update DEVELOPMENT.md with cache clean

* ng update

* update ng-configcat-publicapi and ui

* Changelog update

* npm audit fix

* 1.5.2

CHANGELOG.md

@@ -1,26 +1 @@
-## 1.0.0
-
-- Initial release
-
-## 1.3.0
-
-- Added the [segment](https://configcat.com/docs/advanced/segments) functionality to the extension.
-
-## 1.3.1
-
-- Security package updates
-
-## 1.4.0
-
-- Sensitive -> Confidential rename in the comparator select.
-- Open in ConfigCat link on the feature flag card.
-
-## 1.4.1
-
-- Security package updates
-- Small UI improvements
-
-## 1.5.0
-
-- Security package updates
-- Fixed the webview to show feature flag values
+Please check the [Github Releases](https://github.com/configcat/vscode-extension-configcat/releases) page for the changelog of the ConfigCat Feature Flags extension for Visual Studio Code.

DEVELOPMENT.md

@@ -6,6 +6,9 @@ The code is splitted into 2 parts.
 The webpanel is an Angular project, which can show and update Feature Flag values.
 Source: `./webpanel`
 Build it with `npm run webpanel-build`
+
+#### Local cache
+If the webpanel does not show changes made in the code or in the `ng-configcat-publicapi-ui` dependency the cache clean can help. In the webpanel folder use the following command: `ng cache clean`
 
 ### VS Code extension
 Source: `./src`