EDIT

fixing #3013 (undefined variable )

solving #3384 (Adapt cdm admin permissions to Drupal 7)

typo

fixing #2911 (Classification tree does not scroll to focuced taxon - 2)

solving #3049 (taxontree cache table missing in palmae and cichorieae)

correcting wrong preposition 'over' to 'above'

no longer installing overlay module by default

avoiding form validation error after changing the cdm data source

increasing http request timeout as preliminar solution to comment 1 in #3489 (dataportal must not always load all descriptionelements for the general tab)

refactoring for clearer codebase and improving the scroll to focused node function