Log Message:
Update to 15.0.5

Changelog:
Changes
    Show autocompletion as soon as "@" is typed (server#13961)
    Trim filename in webfrontend for windows compatibility (server#13978)
    Clean code and fix drop zone shadow (server#13982)
    Show original path in trashbin (server#14029)
    Update icewind/smb to 3.0.1 (server#14068)
    Fix: Check if `$this->params['user']` is an array (server#14085)
    [Security] Bump lodash from 4.17.10 to 4.17.11 in /apps/updatenotification \ 
(server#14093)
    [Security] Bump lodash from 4.17.10 to 4.17.11 in /apps/accessibility \ 
(server#14094)
    [Security] Bump lodash from 4.17.10 to 4.17.11 in /apps/oauth2 (server#14095)
    Make sure the relative path is always a string (server#14101)
    Fix the thorrtler whitelist bitmask (server#14151)
    [Security] Bump handlebars from 4.0.12 to 4.1.0 in /build (server#14187)
    Fix recent files (server#14195)
    Update CRL to contain revoked files_external_dropbox, passman & payback \ 
(server#14201)
    Ensure attribute names are lower cased (server#14203)
    Fix small glitches in update notification page (server#14207)
    Fix expiration date changing (server#14212)
    Fix trashbin restore translation (server#14213)
    Remove trailing spaces from localized strings (server#14225)
    Fixing phpdoc in FullTextSearch/Model/ISearchResult (server#14268)
    Fix empty file uploads to S3 (and other streaming storages) (server#14273)
    Do not do redirect handling when loggin out (server#14275)
    Catch Request exception in testRemoteUrl (server#14277)
    Correctly determinate the owner in case of shared external storages \ 
(server#14283)
    Fix header label visibility on open menu (server#14287)
    Prefix $path for filename for internal file cache (server#14288)
    Set false as default for requirePNG (server#14292)
    Use proper scroll container when dragging files (server#14301)
    Fix OC.getCurrentUser() on guest pages (server#14308)
    Fix ocm end-point discovery discovery (server#14312)
    Apply theme to 2FA button (server#14331)
    Fix "Undefined index: user_uid" on login page (server#14339)
    Fix unsafe array access (server#14340)
    Always query lookup server in GS mode (server#14368)
    Use latest ca-bundle.crt from https://curl.haxx.se/docs/caextract.html \ 
(server#14371)
    Try to support 7.3 for DAV (3rdparty#213)
    Backport/stable15/streams 0.7.1 (3rdparty#244)
    Don't add empty entries to the objects array (activity#347)
    Ensure parameters are always an array (activity#350)
    Bye, Scrutinizer! (notifications#293)