Phoenix docs: add the "richtextctrl overview" file into the "index.rst" file list.

git-svn-id: http://svn.wxwidgets.org/svn/wx/wxPython@75850 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
Phoenix docs: avoid Sphinx errors while making the class index for a package (see previous errors on wxGrid).

git-svn-id: http://svn.wxwidgets.org/svn/wx/wxPython@75851 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
Phoenix docs: fix `calendar.py` docstrings to avoid Sphinx warnings

git-svn-id: http://svn.wxwidgets.org/svn/wx/wxPython@75852 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
Phoenix docs: fix `floatcanvas/FloatCanvas.py` docstrings to avoid Sphinx warnings

git-svn-id: http://svn.wxwidgets.org/svn/wx/wxPython@75853 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
Phoenix docs: fix `imagebrowser.py` docstrings to avoid Sphinx warnings

git-svn-id: http://svn.wxwidgets.org/svn/wx/wxPython@75854 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
Phoenix docs: fix `masked\textctrl.py` docstrings to avoid Sphinx warnings

git-svn-id: http://svn.wxwidgets.org/svn/wx/wxPython@75855 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
Phoenix docs: fix `pdfviewer` docstrings to avoid Sphinx warnings

git-svn-id: http://svn.wxwidgets.org/svn/wx/wxPython@75856 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
Phoenix docs: adjust the demo code in `scrolledpanel.py` docstrings to avoid Sphinx warnings (hopefully)

git-svn-id: http://svn.wxwidgets.org/svn/wx/wxPython@75857 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
Phoenix docs: avoid Sphinx warnings if a short description of a class/method ends with the ":" character.

git-svn-id: http://svn.wxwidgets.org/svn/wx/wxPython@75859 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
`ThumbnailCtrl` on Classic: try and fix a ZeroDivisionError when the ThumbnailCtrl is minimized inside a AUI pane.

git-svn-id: http://svn.wxwidgets.org/svn/wx/wxPython@75860 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775