A bunch of relatively minor visual changes & adjustments

[risbi0]

A bunch of relatively minor changes/fix on a few pages I made in one pull request. I hope that's okay with you guys.

• Replaced the language display at the bottom of the nav drawer to its respective, if applicable, flags (double check if I got the flags right). You can change the peko and owo icons if you wish

• Changed Holodex Plus extension buttons to a more stylable layout

• Removed settings popup in navbar since it's already on the area to click to, to go to the whole settings page. I find it unnecessary

• Made settings page cards arranged as one column. This gives a more linear view of the page (which is the view we almost always see everywhere) and not just cram everything in view.

• Removed search button and filter button shadow as it doesn't fit with the search bar right next to it with no shadow

• Removed manage favorites in navbar since there's already a link to the channels page on the same nav drawer

• Removed user card transitions

• Hid account settings, settings, and logout buttons on the account settings page. Since account settings link to that same page so it's useless + there's already an existing link on the user card at the top bar. Settings since there's already a settings link on both the nav drawer and user card at the top bar. Logout since there's already one placed in the user card at the top bar

• Hid bookmarklets on mobile

• Alphabetically arranged the path imports

• Fixed scrollbar in nav drawer pushing certain elements when hovering over it with some gymnastics

• Misc. spacing adjustments