Development branch: Merged in r3889 from stable branch: In addMetaCharset(), remove any <meta http-equiv-"Content-Type" ...> elements, and make sure the charset meta element is the first child of the head.
Development branch: Merged in r3889 from stable branch: In addMetaCharset(), remove any
<meta http-equiv-"Content-Type" ...> elements, and make sure the charset meta element is
the first child of the head.

corinthia/corinthia-editorlib,corinthia/corinthia-editor,corinthia/corinthia-editorlib,corinthia/corinthia-editor,corinthia/corinthia-editorlib,corinthia/corinthia-editor,corinthia/corinthia-editor,corinthia/corinthia-editorlib,corinthia/corinthia-editor,corinthia/corinthia-editorlib