change behaviour of choice fields

changed key / value behaviour so not aonly values are used
enables choice fields as to_email/from_email/cc_mail/bcc_email
improved behaviour of choice email fields
simpler return 

just user return on the newly fixed isChangelogEnabled
add namespace support to files browse
use resource paths to set file permissions
syntax fix
add missing directory separator
add namespace support for file links
add namespace to folder link
try using the url generator
try using the url generator
fix to url within the main nav
fix to url within the main nav
'/files' folder is under BOLT_WEB_DIR that is differs BOLT_PROJECT_ROOT_DIR if Bolt is composer installed vendor app
Add ja-JP translation files.
Merge pull request #1330 from n1215/ja-jp-translation

ja-JP translations
Merge pull request #1328 from rixbeck/master

Filemanager folder operations issue
Merge pull request #1325 from CoolGoose/patch-6

simpler return
Merge pull request #1323 from jadwigo/emailchoices

Add Emailchoices to simpleforms
added an extra check for table_catalog to handle slight variations in postgresql