[TASK] RTE: Move JavaScript files to Resources directory

Releases: master
Resolves: #62733
Change-Id: I2387e316f110312488c32045d0f3e92e0f9cb7a5
Reviewed-on: http://review.typo3.org/33851
Reviewed-by: Stanislas Rolland <typo3@sjbr.ca>
Tested-by: Stanislas Rolland <typo3@sjbr.ca>