fixing the Firefox export download issue

Firefox does not like if you do anything more than only execute the download after the click, so extending the button and using a clicklistener at the same time is not an option.
synchronize jetty versions
allow to use superdev mode with netbeans

just "run" the annis-widget project
Check in the search icon for example queries.
only add components if not already added

This fixes the bug that MediaPlayer does not jump to clicked position on the second click (and maybe also other bugs)
changed the HTML vis to per default just output the token as plain-text
use split panel to allow changes the proportions between control panel and tabs

double click on it to hide or restore control panel
first work to modify startup page by bootstraplistener
do not remove the original element (it is needed later)
compile SCSS in advance and make the v-app 100% width/height

This fixes the problem that the "Please wait while loading" image was not visible on bootstrap.
Merge branch 'bootstrap'
shorter heartbeat and session in order to clean up resources earlier if browser window was closed
updating logging dependencies for GUI and init logging only once
removing the jul bridge since it causes problems in tomcat6 when re-deploying
re-enable jul bridge: make sure tomcat does not output to FINE level in it's global logging.properties
we don't need the vaadin-client-compiler as compile dependency
do not output message if no example query was found and more checks for null in some helper methods
handle tailing / in instance names
preparing to remove AnnisBinary
client implementations for streaming