Merge pull request #149 from luhcas/master

Farbanpassungen und Abstände angeglichen
change white space
add button to template and style it
throw exception on missing handler
add method to change position of children of a block
add compiled css
add handler for updating positions
fix problem with orphaned li elements
connect sort buttons to server
update the courseware LESS file to match the recent changes from b87ab9af30c0e7ceb664538aef5baba1f7869466 (#149)
display human readable names instead of class names, fixes #103
immediately switch to the author view after a block has been created if it is editable, fixes #135
use #get instead of .attributes
refactor appending new blocks, refs #135
videoBlock tests selenium ide only
ensure that initializeBlock() is called properly when it is applied to a collection of blocks, fixes #151
use correct parameter for initializeBlock
let the user enter the name of the test to display in a test block, autocomplete their input, fixes #111
add breadcrumbs, fixes #63
style breadcrumb, refs #63