docs: improve release history page

And also fix the date and a few typos in the release notes

Change-Id: Ia5d8325b78c9819f6be0b27729bc13d6d6f1e403
diff --git a/wscript b/wscript
index d19fcba..ad0e800 100644
--- a/wscript
+++ b/wscript
@@ -5,7 +5,7 @@
 from waflib import Context, Logs
 
 VERSION = '0.5.0'
-APPNAME = 'PSync'
+APPNAME = 'psync'
 GIT_TAG_PREFIX = ''
 
 BOOST_COMPRESSION_CODE = '''