Beta v1.4.0 "History Update"

Changes:

- Removed blur effect from disabled buttons.
- Improved performance of some interface elements.
- The default search engine is now DuckDuckGo.
- Removed file upload error notifications.
- New app icon.
- New look of the welcome window.
- Target url label moved to left-bottom corner.
- Increased font size of the target url label (12px).
- New look of the find-in-page panel.
- Now the substrates are darker.
- Removed shadows from favicons (Better performance).
- New look of sidebar tabs.

Added:

- Added new window controls for welcome and hotkeys windows.
- Added search to the hotkeys window.
- Added history system.
- Added sidebar tabs animation.
- Added libraries links on about page.
- Search engine and new tab blocks are added to welcome screen.
- Added optional bookmarks bar.
- Added notification middle click close action.
- Added hotkeys categories.
- Added web page certificate info window.

Fixes:

- Fixed dark mode on hotkeys window.
- Fixed search for bookmarks and downloads.
- Fixed dark mode at the sidebar downloads.
- Fixed incorrect downloads dates.
- Fixed address bar incorrect url.