Fixed spelling error in Database.java

Changed error message "Error occured while trying to connect to the database" to "Error occurred while trying to connect to the database"
[PDI-13132] - Fix for Netezza sequence usage
[PDI-11353] - Dimension Lookup/Update Step Fails with MySQL - added conversion java.util.Date to Timestamp
[PDI-11353] - Dimension Lookup/Update Step Fails with MySQL - added tests for fix
Merge pull request #834 from MikhailGorbachev/PDI-11353_master

PDI-11353 Dimension Lookup/Update Step Fails with MySQL - added conversion from Date to Timestamp
Merge pull request #833 from akhayrutdinov/PDI-13132

[PDI-13132] - Fix for Netezza sequence usage
[PDI-13132] - Fix for Netezza sequence usage - test fix
Merge pull request #836 from akhayrutdinov/PDI-13132

[PDI-13132] - Fix for Netezza sequence usage - test fix
[PDI-13165] Spoon Fatally errors when a Perspective is removed. Using LinkedHashSet to store Perspectives which supports removal.
fixed bug with DataGrid transformation of empty strings as null
Merge pull request #838 from andrey-markelov/PDI-11194

[PDI-11194] - fixed bug with DataGrid transformation of empty strings as null
[PDI-11194] fixed the cause of integration test failure after the previous
merging
[CLEANUP]: Apply formatting to ValueMetaBase
Merge pull request #843 from andrey-markelov/PDI-11194

[PDI-11194] fixed the cause of integration test failure after the previous merging
[BACKLOG-1488] Create Granular Traps for Jobs.
Merge pull request #845 from tkafalas/feature

[BACKLOG-1488] Create Granular Traps for Jobs.
[PDI-11194] fixed case of summation of number values in number form to number values in empty string form
Merge pull request #846 from andrey-markelov/PDI-11194

[PDI-11194] fixed case of summation of number values in number form to number values in empty string form
[PDI-13102]- [TEST] Regression: 5.2.0 Database Lookup step - "Unable to get value 'Integer(9)'

added test to use 'LIKE' predicate for lookup
the test should fail if a fix for PDI-13102 is not applied
PDI-13102 - Regression: 5.2.0 Database Lookup step - "Unable to get value 'Integer(9)'

Cause: the issue is reproducible when the 'LIKE' predicate is used for lookup.
in this case the cache is ignored and direct database call is performed.
However the db table lookup fails since statefull Database class contains
different row-meta (generated by executing load table SELECT statement)

Resolution: use separate instance of Database class for loading lookup table content