restored StringType
Merge pull request #1470 from fstagni/fixTransformationDB-stringType

restored StringType
v6r8p13
BUGFIX: in getSetupComponents() - agent -> executor
in getCredentials() add groupProperties for the host certificate report
NEW: add option to modify a given configuration file
FIX: bug in __cleanCache (dict modified in loop)
CHANGE: Add possibility to kick a transformation (not skip if no unused
files), touching a file in workDirectory
FIX: dirac-deployed scripts can now work with the system python
FIX: Add extra check for LFns in InputData optimizer. Closes #1472
Merge pull request #1471 from atsareg/fix-v6r7

Several fixes
v6r7p30
Conflicts resolved after merging with rel-v6r7
Merge pull request #1473 from graciani/bug_fix_v6r8

[v6r8] NEW: add option to modify a given configuration file
Merge pull request #1474 from phicharp/fix_TransAgent-130522

FIX: bug in __cleanCache (dict modified in loop)
Merge pull request #1475 from acasajus/fix-dep

FIX: dirac-deployed scripts can now work with the system python
Merge pull request #1477 from acasajus/fix-idata

FIX: Add extra check for LFns in InputData optimizer. Closes #1472
v6r8p14
Merge remote-tracking branch 'upstream/rel-v6r8' into rel-v6r8