NotifySection.cs: increase micro-delay for Chat layout-update when notification bar appear. (Because in Linux if multiple notification bar appears at same time, then 1 last bar might miss the update and have chat area clipped abit because Mono's layout update doesn't appear to stack).

ToolTipForm.cs: make tooltip do not steal focus in Linux. (this cause interruption to typing)
Merge pull request #65 from xponen/linux_tooltip

ToolTipForm.cs: make tooltip do not steal focus in Linux.