NTUEEPLUS-310 Change the favicons to .svg format

[homuch]

In client\src\views\in\abroadSession\utilities\getFavicon.js, some favicons are using an outer source with .png format. Try to change them into a .svg format (They can be saved as files in the asset folder or just a pure <svg /> element). client\src\views\in\abroadSession\Page.js may also need to be modified to make them properly.
(Perhaps icon resources can be found here)
By the way, it's encouraged to add more favicon for other sites, replace <LinkIcon /> with a <CIcon /> or another .svg icon, or do anything that may make the page better.