BugFix search from date type field

For Vector source type, the search filter on column of date type don't work because the object of type DateTime is send to the prepareStringForLikeCompare function.
BugFix search from date type field

My precedent patch works only with a column of type dateTime. This commit is for the both columns of type date and dateTime.
[pt_BR] Missing translations
Merge pull request #382 from andreia/translation-1

[pt_BR] Missing translations
Spacing fix.
Spacing fix.
BugFix search from date type field
Added space after a function call with comma
Merge pull request #380 from daum/master

Allow Number columns to set MAX_FRACTION_DIGITS
Corrected the DSV export documentation
Merge pull request #383 from sixty-nine/master

Corrected the DSV export documentation
Allow negative positions for Columns::addColumn
update pretty html
Fix cell rendering for boolean value
Fix tweaks block
Fix select filter
Remove useless code
fix translation visible issue
Allow empty values is ArrayColumn
Extend grid_column_operator block