[#1244] doc(release): add documentation for 1.5.1

Author: Alexandre Chatiron

documentation/manual/releases/release1.5.x/releasenotes-1.5.1.textile

@@ -0,0 +1,37 @@
+h1. Play 1.5.1 -- Release notes
+
+Play 1.5.1 has been released of the master branch.
+
+The changes in this release are listed in the "Play 1.5.1 milestone":https://play.lighthouseapp.com/projects/57987-play-framework/milestones/230972-151 on Lighthouse and "1.5.1 on github":https://github.com/playframework/play1/milestone/2836691 including 24 resolved tickets.
+
+
+h2. What's new in Play 1.5.1
+
+* "#2173":https://play.lighthouseapp.com/projects/57987/tickets/2173 : Add LocalDateTime binder  
+* "#1133":https://github.com/playframework/play1/issues/1133 : Allow customization of @CacheFor cache key
+* "#1186":https://github.com/playframework/play1/issues/1186 : [#2138]enhance the function for the injector (Add the injectable interface)
+* "#1193":https://github.com/playframework/play1/issues/1193 : Update select.tag to support "null" option of select with attribute "showEmpty: true"
+* "#1232":https://github.com/playframework/play1/issues/1232 : Update HikariCP to 2.7.9
+* "#1233":https://github.com/playframework/play1/issues/1233 : [#1232] feat(libs)/ update hikari CP from 2.6.3 to 2.7.9
+
+
+h2. What's fixed in Play 1.5.1
+
+* "#1158":https://github.com/playframework/play1/issues/1158 : [#1896] fix play daemon stacktrace on [re]start-stop
+* "#1166":https://github.com/playframework/play1/issues/1166 : Allow customization of @CacheFor cache key
+* "#1192":https://github.com/playframework/play1/issues/1192 : Update Configuration.java
+* "#1208":https://github.com/playframework/play1/issues/1208 : [#2140] Make FunctionalTest compatible with Response.writeChunk()
+* "#1219":https://github.com/playframework/play1/issues/1219 : [#2154] fix NPE on @On  annotation
+* "#2154":https://play.lighthouseapp.com/projects/57987/tickets/2154 : fix NPE on @On  annotation
+* "#1220":https://github.com/playframework/play1/issues/1220 : [#2154, #1219] Fixes NPE for @On annotation
+* "#1223":https://github.com/playframework/play1/issues/1223 : [#1823] Fix play.exceptions.CompilationException (fix for the fix #786)
+* "#1224":https://github.com/playframework/play1/issues/1224 : [#1823] Fix play.exceptions.CompilationException (fix for the fix #786)
+* "#1225":https://github.com/playframework/play1/issues/1225 : PlayController implemented
+* "#1226":https://github.com/playframework/play1/issues/1226 : #1237 Use secure websocket protocol for secure pages
+* "#1228":https://github.com/playframework/play1/issues/1228 : Fixing spelling mistake (runing -> running)
+* "#1229":https://github.com/playframework/play1/issues/1229 : 1228 fix spellling mistake
+* "#1237":https://github.com/playframework/play1/issues/1237 : Do not allow mixed-content WebSockets
+* "#1910":https://play.lighthouseapp.com/projects/57987/tickets/1910 : Stacktrace when running play start with existing pid but no process 
+* "#1896":https://play.lighthouseapp.com/projects/57987/tickets/1896 : play daemon [re]start-stop (python traceback)
+* "#2140":https://play.lighthouseapp.com/projects/57987/tickets/2140 : Chunked responses are not testable by FunctionalTest     
+* "#1244":https://github.com/playframework/play1/issues/1244 : Prepare release 1.5.1

documentation/manual/releases/releases.textile

@@ -4,6 +4,7 @@ You can download Play releases "here":https://www.playframework.com/download. Ea
 
 h2. Play 1.5.x
 
+# "Play 1.5.1":release1.5.x/releasenotes-1.5.1
 # "Play 1.5.0":release1.5.x/releasenotes-1.5.0
 
 h2. Play 1.4.x