Merge pull request #3 from mangalam-research/develop

Develop
Renamed api_readme.md to api_intro.md.
Reworking of the caret movement.
Changed wed.css to mangalam.css
Make sure that changing the label visibility level does not cause the caret to jump around.
Allow to run specific feature files when testing.
Test label visibility.
Language fix.
Change the way we set the window size to account for Firefox's fickleness.
Somehow the behavior of backspace on FF changed. This prevents the insertion of a backspace character in text.
Caret stuff has been done.
Update stylesheet to properly color heads in artcles
Corrected punctuation in transformation.js
Merge pull request #13 from keisetsu/develop

Merged latest work from keisetsu.
Merge branch 'develop' of https://github.com/mangalam-research/wed into develop

Conflicts:
	build.mk