Fix broken plugin library

Fixes #2260

core/wiki/config/OfficialPluginLibrary.tid

@@ -1,6 +1,6 @@
 title: $:/config/OfficialPluginLibrary
 tags: $:/tags/PluginLibrary
-url: http://tiddlywiki.com/library/v5.1.9/index.html
+url: http://tiddlywiki.com/library/v5.1.11/index.html
 caption: {{$:/language/OfficialPluginLibrary}}
 
 {{$:/language/OfficialPluginLibrary/Hint}}

editions/prerelease/tiddlers/system/PrereleaseOfficialPluginLibrary.tid

@@ -1,6 +1,6 @@
 title: $:/config/OfficialPluginLibrary
 tags: $:/tags/PluginLibrary
-url: http://tiddlywiki.com/prerelease/library/v5.1.10/index.html
+url: http://tiddlywiki.com/prerelease/library/v5.1.11/index.html
 caption: {{$:/language/OfficialPluginLibrary}} (Prerelease)
 
 The prerelease version of the official ~TiddlyWiki plugin library at tiddlywiki.com. Plugins, themes and language packs are maintained by the core team.

editions/tw5.com/tiddlers/releasenotes/Release 5.1.11.tid

@@ -0,0 +1,35 @@
+caption: 5.1.11
+created: 20160128231609312
+modified: 20160128231609312
+tags: ReleaseNotes
+title: Release 5.1.11
+type: text/vnd.tiddlywiki
+
+//[[See GitHub for detailed change history of this release|https://github.com/Jermolene/TiddlyWiki5/compare/v5.1.10...v5.1.11]]//
+
+! Major Improvements
+
+
+
+! Other Improvements
+
+!! Translation Improvements
+
+
+!! Usability Improvements
+
+
+!! Hackability Improvements
+
+
+!! Bug Fixes
+
+
+!! Node.js Improvements
+
+!! Contributors
+
+[[@Jermolene|https://github.com/Jermolene]] would like to thank the contributors to this release who have generously given their time to help improve TiddlyWiki:
+
+* [[@koke24|https://github.com/koke24]]
+* [[@BramChen|https://github.com/BramChen]]