add step for deleting an extension from its exten and context
delete lines having the same username
refactor user helper to always delete the same way
move extension create to the beginning of the file
refactor extension helper, delete associations using common line helper
move helpers touching U L or E into its own helper
rename find_associated_line_id into find_line_id_for_extension
dissociate device when unlinking a line
add find_line_id_for_user to user_helper
rewrite delete_user to remove old ule service
replace ULE with UL and LE in restapi 1.0
fix pep8 warnings
reuse delete_line_associations in line helper
remove SCCP lines with the same number when deleting extensions
make assertion messages in restapi 1.0 a bit more clear
always delete a voicemail the same way