* Fix critical bug in webui that prevents password from being sent
* Rework webui view:
	- Switch to d3.js for graphs
	- Improve piechart look
	- Rework colors for piechart
	- Fix layout for symbols
	- Fix refresh button
* Add descriptions for whitelist maps
* Fix build on arm (#379)
* Fix issue with the last element in the radix trie
* Add more tests for radix trie algorithm
* Allow to extract URLs from query strings of other URLs (#361)
* Initialize rrd fields before writing to file
* Fix double free if no password has been specified

Signed-off-by: Vsevolod Stakhov <vsevolod@highsecure.ru>

* Add writing to rrd from the controller
* Fixed lots of bugs in rrd code
* Adopt new DNS API in hfilter plugin (by @AlexeySa)
* Allow only one controller process to manage rrd file
* Set event base for fuzzy calls
* Improve fuzzy IO errors logging
* Add rra extraction function to rrd library
* Add graph handler to the controller
* Cache correct passwords to avoid too high CPU usage when working with webui
* Controller sockets are owned by router do not export them to task
* Optimize logging by skipping hash table search if it's empty
* Fix loading issue whith broken statfiles
* Print assertions from glib to rspamd logger
* Load legacy `lua/rspamd.local.lua`
* Update webui with some fixes to learning and scanning

Signed-off-by: Vsevolod Stakhov <vsevolod@highsecure.ru>

* Revert incorrect regexp change that broke the default rules
* Fix lua_tcp module

Signed-off-by: Vsevolod Stakhov <vsevolod@highsecure.ru>

* Restore utf8 validation for regular expressions to avoid crashes
* Fix symbols displaying in the interface
* Add symbol groups to the interface
* Fix maps ID parsing in the controller
* Add multimap and regexp modules documentation
* Backport fixes from libucl
* Fix debian package (by @dottedmag)
* Rework XXH32 invocations

Signed-off-by: Vsevolod Stakhov <vsevolod@highsecure.ru>

If there is a backward compatibility sysvinit script, then
even socket-activated services are started automatically after
install/upgrade.

Common systemd/non-systemd options were moved to .inc
files. rspamd.conf is systemd-enabled one,
rspamd.sysvinit.conf is sysvinit-compatible one.

- Move it from debian/ and centos/
- Ensure Debian package installs .service/.socket
- Enable socket-activated service
- Clean up redundant CentOS config files