Replace deprecated provides() with hasFormat()

QDropEvent::provides() has been deprecated from the move from Qt 3 to Qt 4.
Replace this instance with the hasFormat() method on the mimeData instance.
[FEATURE] (Processing) Initial Grass 7 support
[TRANSUP] nb by James

Signed-off-by: Werner Macho <werner.macho@gmail.com>
added error handling for too big rasters

I ran into memory problems with big rasters. Now the error message points the user to this potential error source.
New Translations to pt_BR
Merge pull request #1277 from simonsonc/mime-format

Replace deprecated provides() with hasFormat()
Merge pull request #1281 from marcelosoaressouza/translation_pt_BR

New Translations to pt_BR
Merge pull request #1280 from anitagraser/patch-1

[processing] added error handling for too big rasters
[processing] handle same memory error in another algorithm
fix regression992 test
[processing] disable excesive info reporting from otb provider
[processing] added new script example (contributed by Michael Douchin)
Merge pull request #1279 from pka/grass7

[FEATURE] (Processing) Initial Grass 7 support
Fix #9923 (broken arrow symbol)
Rename setAcceptsHoverEvents

setAcceptsHoverEvents was obsoleted in place of setAcceptHoverEvent in
Qt 4.4. They behave the same.
Merge pull request #1283 from simonsonc/rename-accept-hover-events

Rename setAcceptsHoverEvents
Do not render grid annotation if the lines/markers would be extremely dense

Otherwise drawing of huge amount of lines/markers can lock GUI
Decoration grid: fix symbol sizes + default cross size