utf8mb4 implementation
Typo
Fixes #202 Threads not attached to moderator actions
Fix broken script
Format binary IP addresses in posts

When `$mybb->settings['logip'] == "show"`, IP addresses are shown in posts (and PMs) instead of through a link. Since 1.8 IP addresses are stored in a binary format and need to be formatted otherwise the IP address will show as "!!!". This one was missed during development.
Format attachment downloads
Show attachment upload date on hover
Add `button` class to reputation delete button
Merge branch 'upstream/feature'
Fixes a few issues introduced with the last commits