navigation panel replaced with my own;
added form for setting current user;
added basic styling;
added saving current user to cookies
ignoring attempt to save user name, if it is empty
I'm verificator caption replaced with 'My bugs only';
unchecked by default;
proper restoring this checkbox condition from cookies.
misspell in cookie variable name spelled right now;
current user is now passed as normal variable to _show;
current user is now higlighted with bold font in verificators list.
small fix: proper enabling 'my bugs only' checkbox (broken due to new corresponding cookie variable name)
added needed javascript and classes for hiding not user's bugs;
NOT IMPLEMENTED tooltip removed;
now feature finished;
other small modifications;
small modifications in tooltips
cosmetical modifications