Favicon+clean-code+icons (gridstack#2660)

* 🎨 Fix favicon, remove jQuery, upgrade highlight.js

* 💄 Improve icons (lucide icons) & add colors

* 💄 Add theme to highlight.js

* 📝 update roadmap & techno doc by adding highlight.js

* 🔨 add /src to prettier format-fix script

* 📝 Update roadmap -> Advanced demo fixes to do

README.md

@@ -1,10 +1,21 @@
 # Gridstack Website
 
 ## Technos
-- Bootstrap will be removed little by little to be replaced by TailwindCSS
+### Icons
 - Lucide Icons
-- Gridstack.js (Of course)
-- Prettier for code formatting
+> We use Lucide Icons for the website, but we copy svg instead of using the lib directly. You can find them [here](https://lucide.dev/)
+- Dev icons
+(We use the link for now but will be replaced by svg)
+> We use Dev icons for the website, but we copy svg instead of using the lib directly. You can find them [here](https://devicon.dev/)
+### Gridstack
+(Of course 🙃)
+### Highlight.js
+For code highlighting, used in the homepage to have a beautiful code snippet `<pre><code>...</code></pre>`
+A custom theme is used, you can find it in the `src/styles/highlight.css` file
+### Dev dependencies
+- Prettier
+For code formatting
+
 
 > The tailwind.config.js file is useless but make code editor plugins works.
 ### Roadmap
@@ -16,5 +27,8 @@
 - [ ] Create a layout in the examples/[name.html] to switch easily between examples
 - [ ] Add micro-interactions to the website
 - [ ] Add animation to mobile navbar
-- [ ] Add lucide icons to the website & in many sections
-- [ ] Improve SEO with meta tags on each page
+- [x] Add lucide icons to the website & in many sections
+- [ ] Improve SEO with meta tags on each page
+- [ ] Find a way to update automatically `Current version | v10.1.2`
+- [ ] Improve responsive design (mobile version) by changing grid to 6 columns instead of 12 for example and reduce padding on x, etc.
+- [ ] Fix advanced demo "Add widget" to not impact the background & fix margins when dropped in the grid