New nodes

• Column Combiner

Bug fixes

• Static help pages, and tool to create help files based on node descriptions (no write access to installation directory required at runtime)
• Reset confirm dialogs are enhanced by toggle "do not ask again"
• Help content view: external links temporarily disabled (can crash application on Linux (eclipse bug))
• Bit vector generator: equal bit set size for bit vectors parsed from id strings and no padding for bit vectors parsed from bit strings
• File reader dialog: opening the dialog took very long if the last file read is on a network drive
• SD reader: occasional null pointer exception
• Smiles parser: input string is trimmed now
• Weka classes generated GenericProperties.props file in user's home directory.
• ThreadedColAppenderNodeModel shuffled columns if more than one column was replaced
• OpenBabel node on windows: execution errors with more than ~5,000 molecules
• added CTab type
• Boxplot: bugfix and better progress report
• String to number node: added dialog fields for thousands and decimal separator
• Number to string node: integers are converted without decimal places now.
• Sampling nodes: warning message if output table does not contain all classes because of too low row count (more classes than rows)
• Sampling nodes: use of BitSet.size() instead of BitSet.cardinality() when counting output for stratified sampling
• 2d coordinates were generated for all cdk columns (ignoring user settings)
• Batch executor: Better help message on customizable java properties (old help resulted in error: "Unknown option '-Dorg.knime.core.maxThreads'")
• Model Writer: appending automatically file extension ".pmml.gz" and print warning. Allow case-insensitive file extension (pmml and pmml.gz), like reader.
• Core: fixed race condition in table ID generation code