Add changelog for 5.3.1 (#586)

* Add changelog  for 5.3.1

* Fix linter error

* Add word to dict

* add word

* Fix more

.aspell.en.pws

@@ -1,4 +1,4 @@
-personal_ws-1.1 en 431 utf-8
+personal_ws-1.1 en 436 utf-8
 ACOT
 ACOTH
 ActiveCell
@@ -102,6 +102,7 @@ DMAX
 dns
 DocFormat
 docId
+DocumentBuilder
 DocumentEditor
 documentserver
 DocumentServer
@@ -143,6 +144,7 @@ FTEST
 fullscreen
 GAMMADIST
 GAMMAINV
+gcc
 GetAdress
 GetBottomMargin
 GetCells
@@ -198,6 +200,7 @@ innodependencyinstaller
 InsertContent
 INTL
 INV
+iOS
 ipfilter
 ISFORMULA
 ISOWEEKNUM
@@ -243,6 +246,7 @@ Nederlands
 NEGBINOM
 NETWORKDAYS
 nextcloud
+nginx
 nodehun
 nodejs
 NodeJS
@@ -364,6 +368,7 @@ Sparklines
 spawnOptions
 specifi
 Spellcheker
+startup
 statsd
 STDEV
 stirkeout