Update tinymce 4.5.2

[dgrammatiko]

Version 4.5.2 - January 4, 2017

• ADDED missing keyboard shortcut description for the underline menu item in the format menu.
• FIXED bug where external blob urls wasn't properly handled by editor upload logic. Patch contributed by David Oviedo.
• FIXED bug where urls wasn't treated as a single word by the wordcount plugin.
• FIXED bug where nbsp characters wasn't treated as word delimiters by the wordcount plugin.
• FIXED bug where editor instance wasn't properly passed to the format preview logic. Patch contributed by NullQuery.
• FIXED bug where the fake caret wasn't hidden when you moved selection to a cE=false element.
• FIXED bug where it wasn't possible to edit existing code sample blocks.
• FIXED bug where it wasn't possible to delete editor contents if the selection included an empty block.
• FIXED bug where the formatter wasn't expanding words on some international characters. Patch contributed by Martin Larochelle.
• FIXED bug where the open link feature wasn't working correctly on IE 11.
• FIXED bug where enter before/after a cE=false block wouldn't properly padd the paragraph with an br element.
• FIXED so font size and font family select boxes always displays a value by using the runtime style as a fallback.
• FIXED so missing plugins will be logged to console as warnings rather than halting the initialization of the editor.
• FIXED so splitbuttons become normal buttons in advlist plugin if styles are empty. Patch contributed by René Schleusner.
• FIXED so you can multi insert rows/cols by selecting table cells and using insert rows/columns.

Pull Request for Issue # .

Summary of Changes

• Update tinymce to latest version
• Correct file permissions

Testing Instructions

Apply patch, select tinyMCE as your default editor and edit an article (try to use as much of the editor's functionality as possible)

Documentation Changes Required

None

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This change is 

[infograf768]

Version change missing in the xml

[dgrammatiko]

@infograf768 thanks, I keep forgetting things...

[infograf768]

Works fine here. Although some files permissions are corrected which do not concern TinyMCE.

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[infograf768]

I have tested this item ✅ successfully on 17821a0

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_{This comment was created with the J!Tracker Application at issues.joomla.org/tracker/joomla-cms/13481.}

[anibalsanchez]

I have tested this item ✅ successfully on 17821a0

Test OK

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_{This comment was created with the J!Tracker Application at issues.joomla.org/tracker/joomla-cms/13481.}

[dgrammatiko]

Thanks @infograf768 @anibalsanchez
RTC