alkeon/creta: WYSIWYG plain js editor with unit tests

alkeon 3b09594994 Delete useless icons and optimize svgs		1 rok temu
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qunit	078b29022d First commit	2 lat temu
editor.js	3b09594994 Delete useless icons and optimize svgs	1 rok temu
index.html	078b29022d First commit	2 lat temu
test_creta_keybindings.js	5bed85d1b4 update tests	2 lat temu
test_creta_keyboard.js	0aa66827b7 New line in titles created an empty title and update tests	2 lat temu
test_creta_toolbar.js	5bed85d1b4 update tests	2 lat temu