work in progress: merge overlay TS settings by plugin settings
settings for pages implemented, new tab for categories
page ids from settings  added to redirects
pageUids added to form action (for detail, list and back pid)
settings for overriding flexform settings added
localized keys for plugin added
method injectConfigurationManager removed: we do not have to merge TS and plugin settings anymore since it is done by ConfigurationManager already
all occurences of <object.action>.pid replaced by listPid
all occurences of <object.action>.pid replaced by listPid
plugin configuration: hide some fields, localized strings for pages added
code cleanup
code cleanup
code cleanup
pageUids added for action buttons
security constants added
Merge pull request #27 from dwenzel/pageSelect

Page select implemented