update tinymce to v4.5.5

external/ExtPrograms.csv

@@ -40,7 +40,7 @@ html5shiv,3.7.3,github.com/aFarkas/html5shiv,3.7.3,IE6-8 shim
 csshover.htc,3.11,peterned.home.xs4all.nl/csshover.html,3.11,IE6 shim
 excanvas,r3,code.google.com/p/explorercanvas/,r3,IE6-8 shim needed by TimesCircle
 CKEditor,4.6.2,ckeditor.com,4.6.2,"add fieldinsert (exp), tableresize, sourcedialog, image2 & imageupload widgets & kama skin"
-TinyMCE,4.5.4,tinymce.com,4.5.4,"add fieldinsert (exp) & quickupload plugins, & xenmce skin"
+TinyMCE,4.5.5,tinymce.com,4.5.5,"add fieldinsert (exp) & quickupload plugins, & xenmce skin"
 PLUpload,2.3.1,github.com/moxiecode/plupload,2.3.1,"needed for TinyMCE Quick Upload, placed in that plugin folder"
 elFinder,2.1.21n,elfinder.org,2.1.22n,"use https://github.com/nao-pon/elFinder, customized in /framework with Exponent php classes and .js files"
 jQuery1,1.12.4,jquery.com,1.12.4,v1.11.3 still needed for old firefox

external/editors/tinymce/changelog.txt

@@ -1,3 +1,5 @@
+Version 4.5.5 (2017-03-07)
+  Fixed text formatting bug with fontsize could not be changed after changing the text color.
 Version 4.5.4 (2017-02-23)
 	Fixed bug where setBaseAndExtend would throw exceptions on Chrome 58 when selecting images.
 	Fixed bug where deleting partially selected contents could remove all contents in some edge cases on WebKit.
@@ -107,7 +109,7 @@ Version 4.5.0 (2016-11-23)
 	Fixed various api documentation issues and typos.
 	Removed layer plugin since it wasn't really ported from 3.x and there doesn't seem to be much use for it.
 	Removed moxieplayer.swf from the media plugin since it wasn't used by the media plugin.
-	Removed format state from the advlist plugin to be more consistent with common word processors.  
+	Removed format state from the advlist plugin to be more consistent with common word processors.
 Version 4.4.3 (2016-09-01)
 	Fixed bug where copy would produce an exception on Chrome.
 	Fixed bug where deleting lists on IE 11 would merge in correct text nodes.