Ground work for match interface

- Ground work for match interface: before/during/after panels:
+ 'before' panel will contain match configuration (round time, etc.);
+ 'during' panel will contain real-time score and time-keeping and
penalties interface;
+ 'after' panel will contain match result and scoreboard.
- Match state management removed from server => will be handled by
client JP.
- JP can now enable/disable scoring more easily (waiting backdrop on CJ
client).
Custom Handlebars helpers + match config in JSON
Compile scoreboard template with dumy data