update gpg keys

- add @wilzbach
- add nightly build bot
- update public key signatures (expiration dates and ids)
- sign updated keyring

Author: MartinNowak

d-keyring.gpg

@@ -3,16 +3,31 @@ Ddoc
 $(P Since 2.067.0 dmd binaries and git tags are signed by D's release managers. The following GnuPG keys can be used to verify those signatures.)
 
 $(PRE
-pub   4096R/0xAB8FE924C2F7E724 2014-09-01 [expires: 2017-02-26]
+pub   4096R/0xAB8FE924C2F7E724 2014-09-01 [expires: 2020-03-25]
       Key fingerprint = AFC7 DB45 693D 62BB 472B  F27B AB8F E924 C2F7 E724
+uid                            Martin Nowak (dawg) $(LT)me@dawg.eu$(GT)
+uid                            Martin Nowak $(LT)martin.nowak@plugintheworld.com$(GT)
 uid                            Martin Nowak $(LT)code@dawg.eu$(GT)
-sub   4096R/0xB273811612BB1939 2015-02-27 [expires: 2018-03-03]
-sub   4096R/0xA78068C444E12E4D 2014-09-01 [expires: 2018-03-03]
+uid                            Martin Nowak $(LT)martin@dlang.org$(GT)
+sub   4096R/0xB273811612BB1939 2015-02-27 [expires: 2020-03-25]
+sub   4096R/0xA78068C444E12E4D 2014-09-01 [expires: 2020-03-25]
 
-pub   4096R/0xC13C70B87267B52D 2012-03-20 [expires: 2016-03-19]
-      Key fingerprint = 0B96 609E 270F 565C 1329  2B24 C13C 70B8 7267 B52D
-uid                            David Soria Parra $(LT)dsp@php.net$(GT)
-sub   4096R/0x4A208C733953AF82 2012-03-20 [expires: 2016-03-19]
+pub   2048R/0x5004F0FAD051576D 2016-01-29
+      Key fingerprint = BBED 1B08 8CED 7F95 8917  FBE8 5004 F0FA D051 576D
+uid                            Vladimir Panteleev $(LT)gpg@thecybershadow.net$(GT)
+sub   2048R/0x3850E93043EBB12C 2016-01-29
+
+pub   4096R/0x2055F76601A36FB0 2015-11-24 [expires: 2026-03-23]
+      Key fingerprint = 8FDB 8D35 7AF4 68A9 428A  CE3C 2055 F766 01A3 6FB0
+uid                            Sebastian Wilzbach $(LT)seb@wilzba.ch$(GT)
+uid                            Sebastian Wilzbach $(LT)sebi@wilzbach.me$(GT)
+sub   4096R/0xFEB1F8D40328010D 2015-11-24 [expires: 2020-11-22]
+
+pub   4096R/0x65394AFEF4A68565 2018-03-26 [expires: 2020-03-25]
+      Key fingerprint = F771 5881 4C19 E5E0 7BA1  079A 6539 4AFE F4A6 8565
+uid                            DLang Nightly (bot) $(LT)builder@nightlies.dlang.org$(GT)
+sub   4096R/0x318B84C8855CCD65 2018-03-26 [expires: 2020-03-25]
+sub   4096R/0xD2EDBA9B3200C132 2018-03-26 [expires: 2020-03-25]
 )
 
 $(P You can also download them as $(LINK2 d-keyring.gpg,keyring) file.)

d-keyring.gpg.sig

@@ -323,7 +323,7 @@ CHANGELOG_DDOC=${DDOC} changelog/changelog.ddoc $(NODATETIME)
 CHANGELOG_PRE_DDOC=${CHANGELOG_DDOC} changelog/prerelease.ddoc
 CHANGELOG_PENDING_DDOC=${CHANGELOG_DDOC} changelog/pending.ddoc
 
-PREMADE=fetch-issue-cnt.php robots.txt .htaccess .dpl_rewrite_map.txt d-keyring.gpg
+PREMADE=fetch-issue-cnt.php robots.txt .htaccess .dpl_rewrite_map.txt d-keyring.gpg d-keyring.gpg.sig
 
 # Language spec root filenames. They have extension .dd in the source
 # and .html in the generated HTML. These are also used for the mobi