Fix #16

Get focus after _restore
Update libs in example

jQuery 1.11.1
jQuery-UI 1.10.4
Implements #12

Added tooltip to module buttons with theirs names
Fix #15

Forgot to restore state to normal before minimization
Fix #12: no title for restore button
Fix #18

Copy dialog position to options on collapse
Fix #19

jQueryUI API changed
Fix #8

Added to core: support for changing buttons before dialog state change.
Added to core: set state to normal after _restore
Reworked minimization code. Now it can support iframes.