ZoomBox sprite positions not defined for EditingToolbar

.olEditingToolbar class was not assigned to the olControlZoomBoxItem classes, which resulted in incorrect buttons.
removed useless layers property
WMTSCapabilities: support of TileMatrixSetLimits, LegendURL and InfoFormat
Making tile scaling work with the Zoomify layer

Because zoomify tiles have different sizes, we also need to store the
standard tile size on the backbuffer. The Zoomify layer gets an override
for the createBackBuffer method to make sure that the native image size
is used.
Create capabilities format for WFS 2.0.0
Merge pull request #1045 from frankydp/patch-1

ZoomBox sprite positions not defined for EditingToolbar
Merge pull request #1056 from georchestra/wmts-capabilities-improvements

WMTSCapabilities: support of TileMatrixSetLimits, LegendURL and InfoFormat
WMTS createLayer method improved
OGC:CRS84 is a valid projection string too
Scale limits rounded to allow layer visibility at the end of the ranges
vars outside the loops
removed useless test on the existence of a style
Merge pull request #1054 from georchestra/wmts-capabilities-layer-reader

WMTS capabilities reader: removed useless 'layers' property
Do not set serverResolutions and min/maxScale at the same time
always compute min/maxScales and set them in the layer config
updated tests
Do not allow dragging of unselected points in standalone mode
Fixing superclass constructor call
Merge pull request #1057 from ahocevar/zoomify-backbuffer

Making tile scaling work with the Zoomify layer
Add support for OGC filters 2.0