spotbugs: Method does not presize the allocation of a collection
use a constant for equals statement
Add send multiple files, if downloaded
add tests
Prevent firebase crashes
re-add flag_secure to prevent showing content if app is locked
unify mockk version
drop Android 4.3, new min version is Android 4.4
add skip option in case of name collision
Update translations
Update Nextcloud Android library
Update 3rd-party dependencies
