Fix missing url_name_args = [] lines in different views.

Fix custom slide create and update view.
Fix motion category create and update view.
Melt INSTALL.txt, THANKS and README.txt to new README.rst. Change metadate for portable version.
Merge pull request #924 from normanjaeckel/NewReadme

Melt INSTALL.txt, THANKS and README.txt to new README.rst
Merge pull request #935 from normanjaeckel/UrlNameArgs

Fix missing url_name_args = [] lines in different views.