* 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

* Apply boundary fix for dkim simple canonization
* Fix ping command
* Return nil if header was not found in lua_task
* Fix hang in upstreams revive logic
* Decode entitles when normalizing HTML parts
* Fix logic of finding URLs in HTML parts
* Do not include \0 into length of text when performing conversion to utf8
* Fix raw vs parsed reperesentations
	Raw parts are now:
		- decoded b64/qp, but *NOT* converted to utf-8
	Processed parts are now:
		- converted to UTF-8
		- normalized if needed (e.g. HTML tags are stripped)
* Rework DKIM canonization to line based
* Fix fuzzy hashes addding
* Use more specific hash function for fuzzy
* Fix leaking of iconv descriptors
* Fix PTR resolving in lua resolver
* Rework spf module.
	- Copy data to memory pool as cached record might be destroyed causing
	    freed memory being passed to the protocol output (use after free)
	- Allow SPF_NEUTRAL policy to be handled separately
	- Add R_SPF_NEUTRAL to the default config
* Rework `register_symbols` function
* Allow to disable components of hfilter

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

* Fix owner when creating folder /run/rspamd (by @sfirmery)
* Fix IP validity checks
* Decode URLs obtained from HTML tags
* Fix crash with unweighted upstreams
* Stop processing headers in parts
* Set sockaddr.sa_family properly when connectig to upstreams
* Fix reload issues in surbl and fuzzy_check (reported by @citrin)
* Fix timeouts in redirector
* Improve lua errors reporting
* Fix lua closures processing in libucl
* Rework calling of lua functions from regexp module
* Choose raw regexp for raw headers
* Rework conversion to utf since glib one is broken
* Ignore SGML style tags in html
* Fix old bug with non-capturing https urls
* Fix memory corruption on fuzzy reload (reported by @citrin)
* Fix percents display in rspamc
* Fix buffer update for DKIM
* Do not validate utf for raw headers

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