Revert "fixed hover button positioning in package manager"

This reverts commit b0f88ed4df3bdac7ebea4d043f0ed17087ca9f5c.
[bugfix] Reverted part of bad CSS changes in commit b0f88ed4df3bdac7ebea4d043f0ed17087ca9f5c
[bugfix] fixed user manager create user -> create button
[bugfix] zero pad the umask
[feature] fixed and enabled the UserManager