Use begin/endResetModel instead of reset

Qt 4.6 introduced a better way of resetting models with beginResetModel()/
endResetModel(). Call beginResetModel() before resetting internal data
structures, and then endResetModel() when finished. beginResetModel()
followed by endResetModel() is the same as calling reset().

Note: reset() is deprecated and is removed in Qt 5.
Merge pull request #1287 from simonsonc/reset-model

Use begin/endResetModel instead of reset
remove duplicate license
limit alpha
fix utf string
Replace QtGui include with individual includes

Qt 5 splits QtGui into Gui and Widgets components. Including the
individual includes will solve this problem.
Merge pull request #1291 from simonsonc/qtgui-include

Replace QtGui include with individual includes
Expose outline join style as a parameter for simple fill symbol type
osgeo4w: try ALL_BUILD twice
Typo in Processing
[tests] Fix composer tests. Rebuild images following MTR rendering changes. Switch tests to use standard test font.
model/view for layer/field selectors