core: for websocket, set a minimal reqdata with peer and port nr.
core: serialize {term, 'undefined'} as sql null value.
core: Opcode and encode_as_binary addtion to ubf api.
Add initial version of Bootstrap 3
Convert template files to bootstrap 3 using conversion tool

https://github.com/arjan/bootstrap3-upgrader/blob/8c03b889d8c90093e4c4180b83940d1930f366d2/upgrade.py
Fixes, upgrade tool dba1246
Manual work
WIP
Move admin CSS into LESS file; work on styling; fix admin widgets
Admin edit page tweaks, dialog
WIP on template checks for all modules
More work on admin pages