related to #20290

Changed git renamed icon to orange color

fix Solarized Light theme highlighting  #24040

Fix #24557. Unconfirmed text of CJK IME collapse to one character due to known bug in Chrome v55 and v56.

Fixes #24409

Fixes #15214

**bug**
release notes reloaded when clicking on the tab again

**Fix**
Like with the html preview, only reload contents of the release notes view if the contents are actually different

Fixes #5745

**Bug**
When zooming in or out, webview contents are not properly sized to fill their parent element

**Fix**
Add a layout method on the webview that manually sets the contents sizes

Fixes #24414: Improve contrast of errors and warnings in the decorations overview ruler in high contrast theme