fix #22

Added function to get nodes that maches the search field
fix #22 better search

eliminate white spaces in search
fix
fix search zoom bug
fix #22

search function now zooms directly on the searched node.
multiple keywords search not yet implemented
fix #22

- fixed size/count unwanted switch
- fixed search bar
fix #22

multi keywords search functional
fix

text labels not displayed if node have too many brothers or oncles
merge search into developpement