Log Message:
Complete update to 0.5.1 (partially committed along with unrelated
texlive updates).

Diff 0.5 to 0.5.1

- Fixing sorting issue in main list
- KBibTeX will set itself as default bibliography editor in KDE
- Crash when finding PDFs
- Fixing crash in id suggestion editor
- Fixing compilation issue
- Restoring session state (1)
- Restoring session state (2)
- Correctly parsing command line arguments if relative paths are given
- Various minor clean-ups and improvements

Diff 0.4.1 to 0.5

- Initial support for BibLaTeX
- Id Suggestion editor like available in old KDE3 version
- "Find PDF" function to locate PDF files through web search engines
- New online database searches: MathSciNet, Ingenta Connect, Inspire Hep,
  SAO/NASA ADS, ISBN DB, JStor
- Improved memory management
- Numerous bug fixes and improvements