Ftw-tika

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- Switch to Tika JAXRS server component (tika-server).
[lgraf]

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- Changed tika source to archive.apache.org.
[lknoepfel]

- Extend integration tests to test conversion of all common
formats we claim to support.
[lgraf]

- Updated tika to version 1.5.
Updated detection of protected office files.
[lknoepfel]

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- Only log a warning on protected PDFs / MS Office documents.
[jone]

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- Add support for running tika as a deamon.
The deamon speeds up the conversion from approximately
1.1 seconds per document to 0.06 seconds.
[jone]

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- First implementation.
[lgraf]