NullPointerException on reaction loading if a command is missing

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What steps will reproduce the problem?
1. create a reaction using a command exposed by a plugin (eg: say something 
with TTS plugin)
2. save this reaction
3. delete the plugin (so the command doesen't exists anymore)
4. start freedomotic

What is the expected output? What do you see instead?
Freedomotic throws a nullpointerexception because this command is no more found 
during reaction loading. The nullpointerexception stops the loading process so 
no other reaction is loaded.

Please fill this info:

Freedomotic Version: 5.4.0
Java Version: 6
OS Name: Linux
OS Version: Ubuntu11.10

Please provide any additional information below.

NOTE: Remember you can attach the LOG FILE to this issue to help the defect
source identification.

Original issue reported on code.google.com by enrico.n...@gmail.com on 7 Dec 2012 at 11:18

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This issue was closed by revision 914ad409a841.

Original comment by enrico.n...@gmail.com on 7 Dec 2012 at 11:36

• Changed state: Fixed

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Original comment by virtualc...@gmail.com on 3 Jan 2013 at 5:42

• Changed state: Verified

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Original comment by virtualc...@gmail.com on 26 Feb 2013 at 10:40

• Added labels: Component-Framework