*Title: New 'remove to trash' confirmation settings

*Documentation:
There were added three new ini-settings in 'RemoveSettings' section of
'content.ini' file for better control of behavior of 'remove to trash'
confirmation dialog.

Name:                       Description:
------------------------------------------------------------------------------
 DefaultRemoveAction         Can be either 'delete' or 'trash' (defaul 'trash')
 ShowRemoveToTrashCheck      Can be either 'true' or 'false' (default 'true')
 HideRemoveConfirmation      Can be either 'true' or 'false' (default 'false')