Fixed tooltip text throughout.  Renamced combo box named cbxEncoding to cmbEncoding
Merge branch 'master' into delimited_text_bug_fixes
Adding testing feature id to test script
Empty records cleaned from layer
More testing and bug fixes

Regular expression delimiter:  fixed non-intuitive behaviour of not
including capture groups in the returned fields, and improved behaviour
for anchored regular expressions.  Added test cases for handling of
regular expressions.

File encoding: Selected file encoding was being ignored.  Fixed and
added test cases for file encoding.

Bad formatted quoting: Fixed handling of badly formatted quotes (eg
unclosed quotes).  Added test case.

Field names: Where a file had duplicate or blank field names it was
not possible to reliably set the names of X,Y,WKT fields.  Relocated
field name handling to simpler common code in QgsDelimitedTextFile, with
automatic renaming of fields with ambiguous or missing names.  Add test
case for field renaming

User interface fixes: Fixed tooltip and other messages throughout.
Changed encoding combo box to be alphabetically sorted. Fixed data
sample to be refreshed when encoding changed.
Minor change to tooltip message
Error message fixes and more regexp testing
Additional documentation
Minor help file improvements
Tidying up help file
Tidying up help file
Replace QGis with QGIS throughout
Updating QGis to QGIS in vector layer source documentation
Merge with master
Post merge fixes
Merge pull request #540 from ccrook/delimited_text_bug_fixes

More delimited text bug fixes