Fix timestamp comparator return value
Upgrade AWS sdk to 2.7.5
Improve FileActions JS to allow for custom rendering

This improves the OCA.Files.FileActions class to support passing a
"render" function in the action object.

The default function "_defaultRenderFunction" is used by default and
renders actions in the usual actions container.

Moved "Rename" and "Delete" to custom render functions.
Allow read-only configuration

Workaround required for IIS setups running ownCloud to prevent dataloss.

Long-term solution would be to move some configuration settings to the database
new folder structure for keys
all keys are now in files_encryption/key/path_to_file/filename/
share keys are named: user.shareKey
file key is named: fileKey
harmonize copyright notice
change private/public key names for consistency reasons
Depcrate namespaced functions, since they can not be autoloaded
Check if files are deletable before trying to delete them
Dont show the delete button for selected files if one of the selected files is not deletable
Add js unit test
Make MappedLocal::isLocal() true like for Local

Missed in 788c8540aa6aac50795c37b088eeaa561d44b86c
Check file existance in MappedLocal in hasUpdated()

Only fixed in Local by eeee9eacea333035e22ef3ed938e36f56bc762cd
Check return of disk_free_space before returning it

Local changes copied from ed8359737199a8a6640986e00df80d971aa6e1d7
and 25370fcb8235d2129cab0f8a5843c4784b3673d0
Check whether file exists before trying to touch() it

Local changes from d069ee8a8bce6a08d8b7921ad378c60af2a0439e
and 258ad38fd3c1e3cdc4ec20238b166e78c334b814
Also clearstatcache() in MappedLocal before using the stats

Local change 283c10f010f5da4ca0b6b7658ac1fa730b8858bf
restrict access to public files only

use mod_rewrite to pretend theese files are not existend for security purposes
blocked 3rdparty instead of l10n
remove border from user menu, adjust to apps menu
google: delete original after successful rename

In GDrive, filenames aren't unique, and directories are just
special files - so you can have multiple files with the same
name, multiple directories with the same name, and even files
with the same names as directories.

OC doesn't handle this at all, though, and just wants to act
as if file and directory names *are* unique. So when renaming,
we must check if there's an existing object with the same
file or directory name before we commit the rename, and
explicitly delete it if the rename is successful. (Other
providers like dropbox do the same for files, but intentionally
don't do it for directories; we really need to do it for
directories too.)

A good way to observe this is to run the storage unit tests
and look at the state of the Drive afterwards. Without this
commit, there will be several copies of all the test files
and directories. After this commit, there's just one of each.

We can't just say "hey, Drive lets us do this, what's the
problem?" because we don't handle multiple-objects, same-name
cases - getDriveFile() just bails and prints an error if it
searches for the file or directory with a given name and gets
multiple results.