#757: double submitting fixed.
#765 Created static list for rendering view model properties injections from another modules (pages, blog)
#780: templates section in site settings split to two tabs (initial version).
#760 Fixed cloning of page with custom options, created SQL script for data fix
#765 registering only non-registered rendering view model properties
#777 Fixed rendering of draft content version preview
#746 Image preview in the thumbnail preview mode: added max-width property
#780: master page creation added.
Merge branch 'dev' of ssh://github.com/devbridge/BetterCMS into dev
#786 Master page dynamic regions can be inserted to blog post content also;
Merge branch 'dev' of github.com:devbridge/BetterCMS into dev
#776: info message about master page added.
Merge branch 'dev' of ssh://github.com/devbridge/BetterCMS into dev
#787 When resizing images, cropped dimensions also are being affecetd
Merge branch 'dev' of github.com:devbridge/BetterCMS into dev
#789 Image history: changed order of properties + added cropped dimensions
#780: grid events attached to master pages list.
Merge branch 'dev' of ssh://github.com/devbridge/BetterCMS into dev
#776 Changed title of editing master page modal window; removed ability to set master page flag in page properties;
Merge branch 'dev' of github.com:devbridge/BetterCMS into dev