Revert "#JC-1408 Fixed.Word are broken in preview."

This reverts commit cb148fc4d35780be55b1bd61c3a9fdb60e033016.
revert 1408
#JC-1470 Fixed after reopen
#JC-1514 Plugins are loaded after application starting.
#JC-1514 Unused methods from PluginService were removed.
#JC-1514 JavaDoc for services.
#JC-1211 - Fixed log level (from warn to info)
#JC-1470 In case of too long URL - value in the dialog is updated with actual URL, rejected by server (because server can add "http://" prefix)
#JC-1514 JavaDoc for controller.
JC-1497 RegisterUserDto moved to jcommune-model.  All operations of user registration moved to separate class.
Merge branch 'master' of https://github.com/jtalks-org/jcommune
JC-1545 Fixed redirect to login page for anonymous users.
JC-1550 Fixed handle error on going to /j_spring_security_check.
Merge branch 'master' of https://github.com/jtalks-org/jcommune
#JC-1470 Removed constraints of minimum length for Link hint and url, empty hint is not showed on the page
#JC-1470 "http://" is added for empty link
#JC-1470 Fixed unit tests
#JC-1211 Fixed error messages in case of authentication failure.
#JC-1470 Deleted migration for empty link hints
Revert "#JC-1470 Deleted migration for empty link hints"

This reverts commit f0d2bd524934b328d905399ce0131a70fb194722.