Fix arethusaUtil.formatNumber() (with specs)
Fix arethusaUtil.formatNumber
Try to use graph without initial transform value
Minor refactor
Add subtreeFinder service
Create nodes when an edge needs to be drawn...

and the node wasn't present before.
Only create a root node on in createGraph()

The others follow later and automatically when their edges need to be
drawn.
Better head change mockup
Typo
Deselect all in search when no query is submitted
Merge pull request #87 from latin-language-toolkit/minor_fixes

Minor fixes and Tree update