Small fixes in rendering and startup

Numerous small fixes in rendering and startup

• improved check on block tags in editmode
• fixed incorrect reference of simply-data-path in lists
• added cloning of objects in lists, so that no references to any databindings are passed
• when rendering fields as template, keep the data reference to the field parent (don't change the scope to the field data)
• improved databinding housekeeping and cleanup when document fragments are removed from the DOM
• improved pasting HTML in elements that only allow inline elements
• improved handling of lists (ol, ul) and list items
• improved handling of textarea's and inputs inside templates
• fixed loss of focus in Chrome when calculating the toolbar position
• fixed screen bouncing behaviour when rerendering lists

Quick fix for Beaker and text-only content

We failed to spot a bug in the dat storage module, used by the Beaker browser, that prevented changes from being saved. This is now corrected.
In addition we noticed that the new text-only code for data-simply-content="text" incorrectly handled special characters (<.>.& and "). This has been fixed as well.

Improved editing experience, API consistency and cross browser support

This release adds a lot of small improvements in editing experience, API consistency and in cross browser support.

Editing improvements

• Added support for images with .jpeg extension
• Improved editing support for switching between ordered and unordered lists, and other block formats
• improved text-only field support, fixes problems with disappearing text content
• Disallow incorrect content nesting, e.g. <h1 data-simply-field="title"></h1> no longer allows you to insert a H2 element.

Improved UX in Firefox

• fixed a bug that made the floating toolbar stay visible when typing
• when starting the editor, it no longer focuses the last editable field automatically

API improvements

• better handling of null values and String objects in fields
• you can now add properties to the root object in editor.pageData
• limited all event listeners to simply-edit fields and lists only, prevents unintended effects with third party javascript components
• allow arrays for field values, using data-simply-transformer
• fixed a bug where in complex cases the databinding would incorrectly use old values

Improved data-simply-list

• allow using sub properties as a list ( data-simply-list="object.property" )
• remembers the selected list item on full list update
• give console errors when using a template rel="id" and the given id is not found

Beaker storage

• fixed saving to non-default data.json endpoint, now saving and retrieving use the same endpoint