fix several SAGA 2.1.2 modules, take1
Http request/response handler refactoring.

HTTP Request handler now manages HTTP request and response.

* added methods to manage HTTP response headers
* added methods to manage response body
* added accessors API methods for request parameters and
  response headers and body

Conflicts:
	src/mapserver/qgswmsserver.cpp

Funded by ItOpen - http://www.itopen.it
Removed python plugins define

Funded by ItOpen - http://www.itopen.it
ASTYLE formatting

Funded by ItOpen - http://www.itopen.it
Restored streaming capabilities, added mHeadersSent flag and accessor

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Merge pull request #1671 from elpaso/requesthandler-refactoring2

Requesthandler refactoring2
Fix app startup test
fix build error
Merge pull request #1670 from gioman/saga_fixes1

fix several SAGA 2.1.2 modules, take1
merge OWSLib 0.8.10 CSW fix

https://github.com/geopython/OWSLib/commit/4e5e24840372028be2858c5c6897818bf6059282
Fix feature request with Fid Filter working on the edit buffer

The following snippet did not take attribut changes that have not been commited
into account.

    layer.getFeatures( QgsFeatureRequest( fid ) ).next()

Fixes the VectorLayer test
Fix encoding of QgsPoint source files

Allows editing these files in QtCreator.
Add methods for converting QgsPoint to and from QPointF and QPoint

Also add some more basic unit tests for QgsPoint
Add methods to QgsGeometry to convert to/from QPointF and QPolygonF
Fix a crash in layer node after removal of layer from registry.

A crash may occur when using custom layer tree in composer legend and layer from that tree is removed from registry.
This would happen only in some code paths.
GRASS 7.1 fixes
[TRANSUP] preparing transition to transifex DEFAULT

Compared translations manually with source and transifex and uploaded every translation with more strings in source to transifex.
From now on only transifex will be pulled and only english source will be updated.

Signed-off-by: Werner Macho <werner.macho@gmail.com>