Fix: Steam Market Sticker Container

[GODrums]

Motivation

In today's update, Steam introduced a new inline display for stickers and charms. Since the extension has its own sticker/charm container, we have to solve the conflict and fix all alignments.

Description

Since the extension's own container has more features, we want to adopt Steam's unique item popover while purging their new container in favor of ours:

• Remove the new "Inspect In Game"-button in favor of our own inspect-link on-hover on the item image
• Remove Steam's new sticker/charm container
• Fix alignment of floatbar and overflow of tooltip according to new structure
• Fix a bug where keychains did not get displayed because of an incorrect exit check
• Add item popover on-hover to the extension's sticker/charm container
  

[Step7750]

Thanks @GODrums !