[FIX] re-importing the translation from a file(.csv, .xml) updates the terms in ir_translation table but does not update it in cache memory, need a server restart to take those change effect in interface. (Maintenance Case: 587178)
[FIX] translation: force clearing of cached translated term after a successfull `trans_load_data`

  When re-loading a translation (with 'Overwrite Existing Terms') we need to
  empty the translation cache to ensure overwritten terms get their new values.
[FIX] base: remove old deprecated file ``base_module_scan.py``.

This file was wrongly left-over from ancient v6.1 times and not used at all under v7.0.