Allow + for string concat in QgsExpression
Fix python bindings for QgsRelation.fieldPairs()
new map tool to select single feature
identify shows a non-modal feature form
use a specific class for the widget (to be used as a custom widget), rename old _widget to _wrapper
select related feature on the canvas from the relation reference widget (in the attribute form)
custom widget for relation reference widget
Merge pull request #1516 from 3nids/vr_geom_relation

map identification for relations
Add a simplified class for fetching HTTP network content
[FEATURE][composer] Allow remote urls to be entered as picture path
for picture items, and automatically fetch them. Sponsored by the
City of Uster, Switzerland.
[composer] Holding alt while pressing arrow keys results in moving items 1 pixel
Split text rendering part of pal into its own class, QgsTextRenderer
Fix draw as outlines flag
Some api improvements
Move QgsLabelPreview to GUI, use new QgsTextRenderer for drawing text
and show preview of all text settings (including shadow and background)
Rename QgsLabelPreview to QgsTextSettingsPreview