Changed declared windows so they don't override onShow method, which now handles window resizing if default height doesn't fit in the browser window.
Reverted ChartWindow to its "pre layout tests" state. Also, adapted to not hide Ext.Windows onShow method.
Merge branch '7.1-ohiggins-SNAPSHOT' of github.com:luisromangz/sir-geoexplorer-base-js into luisromangz-7.1-ohiggins-SNAPSHOT

Conflicts:
	widgets/ChannelTools.js