ImpressPages 4.4.2

Many small fixes to improve day to day life.

• H4 - H6 settings in Heading widget #645
• GRID sortDirection config fix
• ipRoute()->name() method to get the name of current route.
• ipEcommerce()->subscriptionCancelUrl() method
• ipBeforeThemeInstalled & ipThemeInstalled events
• Albanian translations
• Better "Published/Publish" pages status handling
• Better ipFormatPrice handling
• Escape CSS and JS urls (#615)
• Don't print empty ID attribute in Heading widget (#614)