WebServer: switch to html5 (WIP), use html5shiv
update TreePropSheet from TortoiseSVN
fix warning
use the type specifier instead of a cast for float
Revert "actually disable C4995 and C4996 for udf.cpp"

This reverts commit 03ca3eff5fccbfe6bfc1583789d4fe91af8b1900.