daily dev 20200410

Fix OOM during image browsing
Do not tint dialog
Migrate FileDownloader server to User model

daily dev 20200409

Log exception in ContactsImportWork catch block
codacy: Avoid unused local variables
codacy: Avoid unused method parameters
reformat code
codacy: Unnecessary use of fully qualified name
codacy: Avoid unused private fields
codacy: Avoid unused imports
check if at least one account is set up, before receiving files
Change pdf icon
Directly show loading spinner show "no files" only if folder is known to be empty
Fix crash while showing ConflictDialog
Rich workspaces: can be null (if disabled), or string (empty or with content)
Search: only parse search if search event is there
NC18+: add possibility to set expiration date on user/group shares
Ninja-fix formatting of CONTRIBUTING.md
Migrate contacts import job to new API
Migrate ChooseRichDocumentsTemplateDialogFragment to User
Migrate EditShareFragment to new User model
Remove deprecated contacts backup job
Update translations
Update Nextcloud Android library
Update 3rd-party dependencies

daily dev 20200405

Update translations
Update Nextcloud Android library
Update 3rd-party dependencies

daily dev 20200403

Update translations
Update Nextcloud Android library
Update 3rd-party dependencies

daily dev 20200331

if no offline editor is available, use OO/Cool/Text
edit downloaded md/text file is working now
First use preferred mimetypes, then editor for optional mimetypes
Update translations
Update 3rd-party dependencies

daily dev 20200327

Changelog for 3.11.0
Add changelog for 3.11.0
Update translations

stable-3.11.0 (fastlane)

daily dev 20200325

Update translations
Update Nextcloud Android library
Update 3rd-party dependencies

daily dev 20200324

Bump to latest firebase messaging
fix activity image loading
Update translations
Update 3rd-party dependencies

rc-3.11.0-04 (fastlane)