Improve http test ui

help
cls -- clear screen
noop -- no operation, but show traces
version -- display version
debug -- switch to debug mode
ndebug -- switch to no debug mode
dump -- dump all entities
dump type -- dump entities of specified type
dump &id -- dump specified entity
value &id -- display value of entity
debugger &id -- inspect entity in native debugger
log &id -- dump history about entity
effects &id -- dump effects of involed change
c type +opt1:v1 +opt2:v2 ... -- inject a Change
p @name -- create a person
g @name -- create a group
t name +#tag1 +#tag2 ... -- create proposition topic, tagged
tag #name -- create a tag topic
tagging &proposition +#detag1 ... , +#tag1 ... -- create a tagging
v &persona &proposition orientation -- create/update a vote
d &persona +#tag1 ... &agent -- create/update a delegation
m &member &group +inactive:? -- create/update a membership