DiskUsage: Style fixes.
DiskUsage: Open file/folder on cmd-click, zoom on regular click.
Revert "Fix #10902 Terminal crashes setting window size."

This reverts commit 4c8d2387169eb503e9a4a347645dd37c238d1c8a.
Revert "TermViewStates: Check if fView is NULL before using it."

This reverts commit b84955c73892d942d2b53e7a992b63e774e52789.
HttpHeaders: Check assigning self in operator=()
HttpHeaders: Small code refactorings
Also check BList::Add() for success when adding a BHttpHeader.
UrlContext: Improved comment
HttpRequest.h: Fixed some formatting