Don't localize double numbers in the webui. Closes #1525.
Revert "Fix WebUI sort by ratio for some locales (with comma as decimal point)."

This reverts commit c3942fb0b345fb1471a157e59dcdb230eb2d37ae.
Revert "Fix WebUI sort by size/speed for some locales (with comma as decimal point)."

This reverts commit 87d118e87c7bc63a8820c374c6720d220d9df299.