add TEMP VIEW trans_split_acct
add temp view trans_extra_info
Export only single currency transacions to QIF
e.getMessage can be null
Merge pull request #224 from fefe982/dev-fix-223

Fix app crash due to null error message
other getMessage calls
Merge pull request #225 from fefe982/dev-fix-223

Check null in other getMessage calls
Merge pull request #222 from fefe982/qif-filter

Exclude multi-currency transactions when exporting QIF. 
Created temporary VIEWS to simplify SQL queries