This undoes parts of Laurent Montel's export cleanups, because those 4
classes are needed to build (the last release of) Blogilo:
- src/CMakeLists.txt: Install the InsertHtmlDialog headers (inserthtmldialog.h, InsertHtmlDialog).
- src/emoticontexteditaction.h: Export the KPIMTextEdit::EmoticonTextEditAction class.
- src/inserthtmldialog.h: Use the public export macros for the KPIMTextEdit::InsertHtmlDialog class.
- src/insertimagewidget.h: Export the KPIMTextEdit::InsertImageWidget class.
- src/inserttablewidget.h: Export the KPIMTextEdit::InsertTableWidget class.
This allows building Blogilo again.