[server] Implement events in sctp based on json
[client] Implement events message in sctp(json) protocol
[client][sctp] Fix sctp events listening
[server][sctp][ws] Fix events emiting
[sctp] Implement command to get arc begin and end
[client] Refactoring window system to sc-structures
[scripts] Remove unused scripts
[scg] Work on structure view logic
[sctp][client][scg] Fix event mechanism. Implement sctp comamnds: create_node, create_arc
[client] Small fixes. Cleanup sources
[client] Small fixes in template
[script] Improve script to copy static files
[scg] Work on object states
[client] Fix bug with system identifiers
[client] Add interface to check edit possibilities
[scg] Add integrate button. Hide edit buttons when edit not possible. Fix autocompletion
[client] Add possibility to get link to specified question and opend it
[scg] Work on integration into sc-memory