indicator-bluetooth misses controls to enable file transfer

The default settings of `indicator-bluetooth` make file transfers fail without feedback (not too great, but not the issue here). One has to install `bluemon` and enable file transfer options like ~"allow read/write" and ~"allow trusted devices". The user expects `indicator-bluetooth` to offer a sufficient set of options to transfer file which is a quite basic task for bluetooth connections. The options should be added to sufficient hints displayed in the application (e.g. a hint that the settings aren't implemented yet and that one needs to manage the device with `bluemon` like described above).

ProblemType: Bug
DistroRelease: Ubuntu 15.04
Package: indicator-bluetooth 0.0.6+14.10.20141006-0ubuntu1
Uname: Linux 4.0.1-040001-generic x86_64
ApportVersion: 2.17.2-0ubuntu1.1
Architecture: amd64
CurrentDesktop: Unity
Date: Mon May 25 10:54:04 2015
EcryptfsInUse: Yes
InstallationDate: Installed on 2015-04-02 (52 days ago)
InstallationMedia: Ubuntu 15.04 "Vivid Vervet" - Beta amd64 (20150326)
ProcEnviron:
 TERM=xterm
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=de_DE.UTF-8
 SHELL=/bin/bash
SourcePackage: indicator-bluetooth
SystemImageInfo:
 current build number: 0
 device name:
 channel: daily
 last update: Unknown
UpgradeStatus: No upgrade log present (probably fresh install)
upstart.indicator-bluetooth.log:
 (unity-control-center:7633): Bluetooth-WARNING **: Can't open the plugins dir: Fehler beim Öffnen des Ordners »/usr/lib/gnome-bluetooth/plugins«: Datei oder Verzeichnis nicht gefunden

 (unity-control-center:7633): Bluetooth-WARNING **: Could not open RFKILL control device, please verify your installation