In progress creation of new analysis extents tool
In progress support for analysis extent definition.
In progress work on marquee selector
Possible remedy for #1287
Merge pull request #1291 from timlinux/master

Backported fix for #1287 - memchecker not working on osx yosemite
In progress support for extents selection for analysis. Interactive setting of marquee now works - still needs to by used by dock prior to running analysis.
In progress support for extents selection for analysis. Reorganised dialog to be more compact and get rid of some cruft.
Incremental improvements to extent selector
More small marquee tweaks
In progress updates for user analysis extents support. Persist rubber band extents for last and next analysis extent when rubber bands are toggled. Implementation for slot for user extents. Refactor code in dock to avoid duplication.
In progress hookup of extent selector to dock etc.
More cleanups for user analysis selection and extents and crs propogate back to dock now. User analysis extent rubber band displayes nicely.
Marquee selection now working - analysis is constrained to that extent
Fixed issue when marquee selection is cancelled and tool was not reverted
Merge branch 'develop' into marquee
Updated save scenario tool to take into account user defined analysis extent if present
In progress state saving for user analysis extent
State saving added for user extentsso they are restored when re-opening QGIS.
Resolved merge conflicts
Fixes and tests in progress for user defined extents