Image basic module.

Create images with attributes.
Scroll to correct place when paste is done

Scroll to content when a paragraph has a huge content, was not correct. It scroll always to the beginning of the content, not to the the last text.
Merge pull request #1085 from najor/howling-mad-cursor-position-after-paste

Scroll to correct place when paste is done
Merge pull request #1084 from najor/howling-mad-image

Image basic module.
List basic module
Merge pull request #1083 from najor/howling-mad-lists

List basic module.
Merge branch 'howling-mad' of github.com:alohaeditor/Aloha-Editor into howling-mad-transformation

Conflicts:
	src/dom/mutation.js
	src/dom/nodes.js
	src/html.js
	src/paste.js