add sqllite db and helpers
rename package + add huggi bluetooth service v1

huggi service: extends btservice and:
  - manages the reception/insertion of new hugs in the db
  - provides new events: on ack received, on hugs received,...
details
add sendCommand in HuggiService + Serialisable Hug

- send the list of new hugs with the intent
- rename interface + make it return HuggiService
- add the sendCommand method to service
wip - listview to display hugs

- use the contact picture, if any
- get local info details (name+pic)
add working/sync animation
add a first launch activity with dialogs

not a good idea: the dialogs are dismissed when a configuration
change occurs.

TODO:
- keep the idea, but use fragments instead
wednesday demo

pure wip code, but the general app is approved (no need to go further
in terms of functionalities).

TODO:
- cleanup
- proper list ordering in hugslist tab
- add hugs/week in the welcome tab ?
use epoch to store the datetime + fix ordering in list

the hugs are now displayed with the latest one at the top
always query the db after an add
add forceSync functionality

there was a button, but not eventhandler...
start new task after first launch

when quitting the first launch, a "go back" will exit the app
begin refactor: just rename