"Save site settings" button or "Sign" button does nothing

### Step 1: Please describe your environment

* ZeroNet version: 0.6.2 rev3323
* Operating system: Win. 10 64bit
* Web browser: Firefox
* Tor status: available
* Opened port: no

### Step 2: Describe the problem:

I have clonned ZeroTalk, i have created first topic. I opened (0) menu and tried to modify site name and description and click "Save site settings" and "Sign" button. Nothing happened. Site has only me as apeer (Onion: 1). When i reload page and click save site settings, i see this in developer console (F12):

[ZeroTalk] save scrollTop 0
all.js:457:7
[ZeroWebsocket] Closed
close { target: WebSocket, isTrusted: true, wasClean: false, code: 1006, reason: "", currentTarget: WebSocket, eventPhase: 2, bubbles: false, cancelable: false, defaultPrevented: false, … }
all.js:142:14
[Wrapper] Created!
all.js:1546:14
[ZeroWebsocket] Open
all.js:142:14
[ZeroTalk] inited!
all.js:457:7
[ZeroTalk] restore scrollTop
Object { scrollTop: 0 }
0
all.js:457:7
[Wrapper] actionSetViewport
Object { cmd: "wrapperSetViewport", params: "width=device-width, initial-scale=0.8", wrapper_nonce: "removed", id: 1 }
all.js:1546:14
[Wrapper] Setting title to myZeroTalk - ZeroNet
all.js:1546:14
[User] Updating user info... undefined
all.js:457:7
[ZeroTalk] Routing url: Topic:removed/removed&wrapper_nonce=removed
all.js:457:7
[TopicShow] Loading topic... (Done in 148ms)
all.js:457:7
[TopicShow] Loading comments... (Done in 168ms)
all.js:457:7
[ZeroTalk] Adding inline editors (Done in 8ms)
all.js:457:7
[Follow] Username mentions -> undefined
all.js:457:7
[Follow] New topics -> undefined
all.js:457:7
[ZeroTalk] Websocket callback not found:
{…}
cmd: "response"
result: undefined
to: 10
__proto__: {…}
__defineGetter__: function __defineGetter__()
__defineSetter__: function __defineSetter__()
__lookupGetter__: function __lookupGetter__()
__lookupSetter__: function __lookupSetter__()
constructor: function Object()
hasOwnProperty: function hasOwnProperty()
isPrototypeOf: function isPrototypeOf()
propertyIsEnumerable: function propertyIsEnumerable()
toLocaleString: function toLocaleString()
toSource: function toSource()
toString: function toString()
valueOf: function valueOf()
all.js:457:7
[Sidebar] startDrag
all.js:1596:7
[Sidebar] Moved
all.js:1596:7
[Sidebar] Creating content
all.js:1596:7
[Sidebar] Opened
all.js:1596:7
loadGlobe true
all.js:2399:7
[Sidebar] stopdrag opened: true
all.js:1596:7
THREE.WebGLRenderer 69
all.js:1048:216
THREE.WebGLProgram: gl.getProgramInfoLog()

all.js:1110:154
THREE.WebGLProgram: gl.getProgramInfoLog()
C:\fakepath(27,33-109): warning X3571: pow(f, e) will not work for negative f, use abs(f) or conditionally handle negative values if you expect them

all.js:1110:154
This site appears to use a scroll-linked positioning effect. This may not work well with asynchronous panning; see https://developer.mozilla.org/docs/Mozilla/Performance/ScrollLinkedEffects for further details and to join the discussion on related tools and features!
19removed

I checked the log file for interesting log entries and i see:
[2018-02-13 11:40:16,786] DEBUG FileServer Conn#74741 64.137.251.65 [v2] > Socket error: UnpackValueError: Unknown header: 0xc1 in Connection.py line 185 > fallback.py line 557 > fallback.py line 538 > fallback.py line 537 > fallback.py line 498 > fallback.py line 494
[2018-02-13 11:40:30,592] DEBUG Site:mysiteaddress Websocket send error: UnicodeDecodeError: 'utf8' codec can't decode byte 0xe9 in position 232: invalid continuation byte in UiWebsocket.py line 202 > __init__.py line 244 > encoder.py line 207 > encoder.py line 270