minor performance improvements for insert into

 - avoids new Predicate allocation
 - avoids string join + split to extract contents from a map
move fromMapByPath method into StringObjectMaps
documentation: improve readability; line length, indentation, highlighting.
documentation: there is no plural form of information
Merge pull request #1036 from crate/l/docs-line-length

documentation: ensure SQL queries are below 85 chars per line.
documentation: ensure line length is below 85.
Merge pull request #1038 from crate/l/docu-fix-informations

documentation: there is no plural form of information
Merge pull request #1043 from crate/l/docu-sql-output

documentation: ensure line length is below 85.