Add missing space between class names

Fixes #2845
Throw instead of calling a function that throws
Export useful xml functions
Verbose warnings
Rename ol.xml.parse to ol.xml.parseNode
Rename ol.xml.load to ol.xml.parse
Improve doc for xml functions
Merge pull request #2884 from tschaub/wkt-returns

Make WKT methods throw errors instead of calling a method that throws.
Merge pull request #2869 from tonio/xmlexport

Export useful xml functions
Use ternary notation
Add wrapX option to TileJSON source
Explicitly pass coordinate dimension before transforming
Merge pull request #2886 from elemoine/ternary

Use ternary notation
Test 3d points and proj4 defs
Merge pull request #2887 from tschaub/more-d

Explicitly pass coordinate dimension before transforming.
Element boundedBy must not be set as geometry field on GML reading
Use correct layer property names
Merge pull request #2890 from elemoine/layerproperty

Use correct layer property names
Merge pull request #2885 from elemoine/tilejson

Add wrapX option to TileJSON source
Use a standard title attribute for the control buttons