Add FileId header and switch fileid and instance id

Fix typo in LDAP wizard

* owncloud/fix-wizard-typo:
  Excpetion->Exception

Fix api documentation

replace template function link_to_docs() with \OC_Helper::linkToDocs()

Use OCP\Share::unshare() instead of directly using OCP\Share::delete()

fixing Specified key was too long; max key length is 767 bytes

[WIP] extend unit test to directories starting or ending in whitespace

Remove Autoloader Cache Hack. Do not use Cache on Install.

[Trivial] Make "Please contact your system administrator" a full sentence.

fix documentation stuff

When updating an appstore app, execute a database update

Fix privatedata

Make home folders movable without requiring rescans

Corretly hide "no permissions" message in controls in viewer mode

closest will search up the tree

Add `occ upgrade` command.

* owncloud/upgrade-form-occ:
  Add some color to the occ upgrade output.
  Use "else if" to remove one level of indentation.
  Missed one write()->writeln(). Fixed.
  Use writeln() instead of write()
  Use the OutputInterface for output and return error codes.
  Move all upgrade routines into the command-line tool.
  Add `occ upgrade` command.

forward port of https://github.com/owncloud/core/pull/5647#discussion-diff-7341163
trust me, I know what I'm doing

Fixes #5622

Improve quota input field