ddblock 6.x-1.0-beta

add functionality for block instances so all blocks can be used with
the dynamic display block module
change headerimage specific template file to a block content template file.
add settings for block instances.
add maximum image to show for image folder.
add input type to choose which input method to use.
add clear-block in template files.
add fieldsets to make settings more grouped.

rename some function to better names.
optimize get_blocks code.
remove headerimage specific code.
strip css file to minimum.
clean up AHAH callbacks.
new cycle plugin version: 2.26

issues fixed

#295606 regular expression fix
#299500 CSS changed