dynamic configuration of nodes in codeine from the main server

[oshai]

to allow configuration of many nodes from one script that runs - possible on the web server itself

[oshai]

another alternative is to have one discovery for few projects (so node can be only in one of them)

[oshai]

issue #122 is related to this

[oshai]

for now instead of discovery for few projects the peer will have cache. in addition, the problem with this is that projects with many nodes will have huge configuration. this requires a new structure of project configuration, for example, new table in the database for project+peer->nodes rows.