* Small bug fix

Signed-off-by: Jiri Hnidek <jiri.hnidek@tul.cz>
* Python API
 - Consolidation of API
 - Method send_tag_set_value() renamed to send_tag_set_values()
 - The argument values in method send_tag_set_values() can be only tuple
 - Modified example of Python client
Merge branch 'devel' of git@github.com:verse/verse.git into devel
* Added two constants (node permission) to Python API

Signed-off-by: Jiri Hnidek <jiri.hnidek@tul.cz>
* The Verse server is linked with libWebsockets library
 - Added basic cmake find module for libWebsockets
 - Modified CMakeLists.txt to have optional support for libWebsockets
WIP: Implementation of WebSocket
 - Listening at WebSocket port is disabled now, because libwebsocket
uses poll and verse uses select. Therse is issue with hnadling signals
too.
* Load cert file with CA chain
* Removed libWebSockets
* WIP: Added basic support Wslay ... it compiles with :-)
Merge branch 'master' into websocket
* Refactoring

Signed-off-by: Jiri Hnidek <jiri.hnidek@tul.cz>
* WIP WebSocket: Verse server listen on other TCP port intended for
WebSocket

Signed-off-by: Jiri Hnidek <jiri.hnidek@tul.cz>
* Refactoring of code
* WebSocket socket can accept connection
* WIP WebSockets: added some experiments
* WebSocket WIP: Verse server works as echo server :-)

Signed-off-by: Jiri Hnidek <jiri.hnidek@tul.cz>
* Added simple html example of using WebSocket

Signed-off-by: Jiri Hnidek <jiri.hnidek@tul.cz>
* Added simple support/example of sending binary data

Signed-off-by: Jiri Hnidek <jiri.hnidek@tul.cz>
* Refactored code a little
* It is possible to close WebSocket connection

Signed-off-by: Jiri Hnidek <jiri.hnidek@tul.cz>
* Refactoring of code
* WebSocket very WIP ... example doesn't work

Signed-off-by: Jiri Hnidek <jiri.hnidek@tul.cz>
* Small refactoring
* WIP: test web page