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* Added button to toggle the toolbox visibility ON and OFF
* Added a function to display a pop-up card to show alerts and other messages within the page (to avoid calls to alert and confirm)
* Increase minimum Blockly workspace height
* Added function calls (with a tooltip indicating unimplemented feature) to all clickable elements in the design
* Added a button in the XML code text area to be able to load the XML into blocks for the workspace (js unimplemented)
* Added drop down menu in the Navigation bar to select examples to load (js unimplemented)

It still looks a bit off vertically depending on browser, but this is still an improvement. Will need to look back into it in the future.

* Increase content width, overwriting Materialize values
* Updates Blockly toolbox style to fit design
* Added button in XML text area to load blocks (Js not yet implemented)
* Navigation bar is only fixed to screen on larger resolutions. Smaller (like mobile) allow scrolling to maximise available space
* Added README file to Materialize folder to easily keep track of current version used

Updated Materialize framework to latest version (unofficial release > 0.94.2), contains numerous bug fixes and improvements from previous used version, from which these are relevant:

* Sidebar dismiss issues fixed
* Waves fixed for Windows touchscreen devices
* Fixed position dropdown problems fixed
* Navbar supports fixed position
* Standardized components top and bottom margin

Basic layout added, with blockly for arduino, code and xml real time generation.
No buttons are currently implemented (load, save, delete, run, etc).

Fixes google/blockly#35

Added extra buttons with icon to load and save blocks and to access the settings. The functions for this buttons are not yet implemented.

Synchronised up to commit 7da8998d: https://github.com/google/blockly/commit/7da8998d5a5a47b40e28d852cdad3a303ed9018c

(Upstream Blockly mirrored in 'blockly-original' branch).

Conflicts:
	demos/code/index.html
	tests/generators/index.html
	tests/playground.html

Don't crash on prompt cancel.