Fix undefined JS on login/setup page

Conflicts:
	lib/private/app.php
	lib/private/installer.php

Database code cleanup

- kill replaceDB() - this function is unused and it's implementation obviously wrong
- add method annotation OC_DB_StatementWrapper::fetchAll
- remove duplicate code in Test_DBSchema and reuse OC_DB::tableExists
- remove unused variables

Cleanup code of files_sharing/ajax/ a little bit

Check if ReflectionMethod::getDocComment is working

Allow apps to control via a hook skipping add/remove a file during filescan

Fixed undefined object error that appears after a delay

select webdav address on click

prevent pageload if pressed enter on name email change. fixes #6179

Fixed drag and drop from external files, added tests

Add a warning to the configuration file

Add LargeFileHelper / Add CURL filesize workaround / Fix some 32-bit filesize issues

* Use "filesystem_cache_readonly" config setting, update comment in config.sample
* Use $this->cacheActive to cache config setting
* Add public Scanner::setCacheActive() to set $cacheActive programmatically

Add storage->instanceOfStorage() to handle instanceof with storage wrappers

Sharing overview page

In some cases (like in the unit tests) "file_target" is not set yet
whenever the target file system hasn't been mounted yet.

OC.Share can be used in non-files apps, so the fileList callback needs
to support that as well.

- Fixed renaming and fileActionsReady event
- Added unit tests for shares list
- Fixed public page with defer
- Fixed file actions in sharing overview
- Fixed sharing counterpart list (10 entries max)
- Fixed file path attribute to be used in download action
- Fix sharing list headers
- OC.Share icons now operate on fileList instance
- Fix OC.Share.updateIcon when more than one list in DOM

Table headers should be 999 even when using links (introduced by the
sorting feature)

When selecting with checkboxes, they must appear black.

Sometimes no icon file is passed to replaceSVGIcon(), it showed an error
in IE8 and broke the code flow.

This fix adds a check whether the file name is set.

Legacy file actions are registered by legacy apps through
window.FileActions.register(). These actions can only be used by the
main file list ("all files") because legacy apps can only deal with a
single list / container.

New file actions of compatible apps must be registered through
OCA.Files.fileActions. These will be used for other lists like the
sharing overview.

Fixed versions and sharing actions to use OCA.Files.fileActions, which
makes them available in the sharing overview list.

- Removed file size from file summary in sharing overview
- Fixed document title
- Fixed empty content text for shared overview

Added "dir" in file actions handler context so that handlers can know
what the path of the file was without having to look it up from the file
list.

Fixed versions app to use the context.dir instead of the old $('#dir')
element. This makes the versions popup work in the sharing overview.