Add multi interval select

These commits add possibility to use interval select window on several traces at the same time.

Tested :

• IntervalSelect window box and slider on one or several traces
• Moving / Scaling the trace from the view changes the IntervalSelect window

Thing that could change :

• Adding and closing traces while the IntervalSelect window is shown does not updates it (This will change when opening and closing traces is done properly)
• Moving a trace from the view updates every IntervalSelectLayouts, this will be individualized. It can't be for now.

src/common/Info.hpp

@@ -22,6 +22,8 @@
 #ifndef INFO_HPP
 #define INFO_HPP
 #include <string>
+/* -- */
+#include "common/common.hpp"
 /*!
  * \brief Class used to store information.
  *