removed arrayhelpers from module-helper
moved venue-filter model-eventslist

it was in the function for the categories and doing so it was causing an
error.
added option to hide/show dropdown button
added language strings
added tablefiles, changed references of table-files + modified import process (REF #11)

- added table-files as it makes more sense to give the table-file the
name of the table it's referring to
- doing so the references to the ta ble-files had to be addressed and as
the import/attachment/registerting/housekeeping were pointing to it
those had to change too.
- also the impor process was modified, some of the code can be merged or
altered but that can be done later.
removed obsolete table-files, FIX #10

the table-files were obsolete
changed modal-eventelement

the searching was not working correctly and the filter-box  was added
back
cleanup