Update tiny to 3.5.11
Remove _src files
Missed a few
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Merge pull request #4883 from aDaneInSpain/patch-4

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Merge pull request #4881 from aDaneInSpain/patch-1

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Amend copyright date
Merge pull request #4391 from wilsonge/tiny

TinyMCE Upgrade for J2.5 to latest 3.5.11
Search is broken on Chrome. Fixes #4200