Put old manual back.
Updated testcase to be faster and more useful.
Added material model based on rheology in Morency and Doin, 2004
Merge branch 'morency_doin_material'
Fix a bug that gives wrong velocity near the poles.
Add comment
Merge pull request #227 from SiqiZhang/gplate_fix

Fix a bug in gplate plugin: While gplate uses zero longitude at all grid points at poles, we assume the longitude at those points vary from 0 to 360. This results in a wrong velocity to be interpolated near the poles (the velocity between poles to the first latitude grid points would be wrong, however the velocity right at the pole will be OK).
Add test for gplates-3d.
Merge pull request #228 from gassmoeller/gplate_fix

Gplate fix
Fixed typo
Added dynamic pressure visualization plugin.
Merge remote-tracking branch 'geodynamics/master'
Merge branch 'dynamic_pressure_visualizer'