Feature/webgui ops (#723)

* Update node packages, download nodejs in build process, start server from openspace process
  * Patch CEF cmake automatically
  * Build webserver automatically
  * Work on CMake for WebBrowser, Webgui and CefWebGui
  * Map key modifiers to CEF
  * Smooth time interpolation in webgui
  * Automatically focus on search field in filter lists
  * Move webgui code to external repositories
  * Use asset system to distribute webgui
  * Remove webgui from main repository
  * Add support for right click in webgui and improve timetopic
  * Resolve cmake policy warning
  * Add relative time interpolation to lua interface
  * Sanitize json error message before logging error. Workaround for #736
  * Added gui properties to scene graph nodes
  * Add version topic
  * Add shortcuttopic
  * Add ability to disable rendering of cefwebgui
  * Don't do message loop work if there is no browser.
  * Set correct path to nodejs on unix
  * Message loop work in presync
  * modifications for shortcuts in gui, added names for shortcuts
  * Set properties via lua scripts
  * Allow gui grouping for shortcuts
  * Add gui paths keybindings
  * Blocking keyboard callbacks when webgui has keyboard focus in an editable field
  * Allow disabling of WebBrowser and CefWebGui
  * Make it possible to hide GUI
  * Get rid of redundant dashboard items if web gui is used
  * Hide WebGUI on slave nodes
  * Hide WebGUI on main rendering window if a GUI window exists
 * Enable WebGUI on default unless it is overwritten in the openspace.cfg
  * Add guiName for propery owners in socket api

modules/webbrowser/src/browserclient.cpp

@@ -26,11 +26,13 @@
 
 #include <modules/webbrowser/include/defaultbrowserlauncher.h>
 #include <modules/webbrowser/include/webrenderhandler.h>
+#include <modules/webbrowser/include/webkeyboardhandler.h>
 
 namespace openspace {
 
-BrowserClient::BrowserClient(WebRenderHandler* handler)
-    : _renderHandler(handler)
+BrowserClient::BrowserClient(WebRenderHandler* handler, WebKeyboardHandler *keyboardHandler)
+    : _renderHandler(handler),
+    _keyboardHandler(keyboardHandler)
 {
     DefaultBrowserLauncher* browserLauncher = new DefaultBrowserLauncher;
     _lifeSpanHandler = browserLauncher;
@@ -49,4 +51,8 @@ CefRefPtr<CefRequestHandler> BrowserClient::GetRequestHandler() {
     return _requestHandler;
 }
 
+CefRefPtr<CefKeyboardHandler> BrowserClient::GetKeyboardHandler() {
+    return _keyboardHandler;
+}
+
 } // namespace openspace