COMP: Re-organize module directories

Built-in scripted module are now organized like the extension. One
folder
per module.

Also, the url of homepage is modified to the extension's page.
Merge pull request #599 from lpfang/update-GyroGuide

COMP: Re-organize module directories
ENH: Updating DTIAtlasBuilder from revision 70eab4fe1058c79ada560989f4dba0c5842435d5 to revision 61d7dde1271e6ddf12b0682ff9aa8b570db6caa2

ENH: When compiled as an extension, DTIAtlasBuilder looks first in the extension folder to find the necessary external software and only after looks into the system PATH
ENH: Better propagation of git related CMake variables.
ENH: Searches for Subversion
BUG: install rule for GreedyAtlas was working only if "make" was run from the outer DTIAtlasBuilder-build directory
ENH: Addition of install rules for AtlasWerks (linux-extension) and for the other tools
BUG: Declaring and filling COMMON_BUILD_OPTIONS_FOR_EXTERNALPACKAGES after finding Slicer package was creating compilation errors on linux
BUG: Missing previous files committed on Windows
BUG: Installation of tools on Windows and starting DTIAtlasBuilder from within Slicer
BUG: Missing modified files from previous commit
Merge branches 'compilation_on_mac' and 'master'
BUG: Compilation on Mac
ENH: Update SuperBuild to compile DTIProcess statically and to get the last version of DTIReg
Merge branch 'DTIRegStaticBatchMake'
ENH: Build DTI-Reg with SuperBuild ON
BUG: Teem repository has been moved. We updated the teem's location to its new location
ENH: version number of DTIAtlasBuilder updated
ENH: DTIAtlasBuilder noew builds DTI-reg1.1.3 which allows to use the histogram match option with ANTs
Merge pull request #600 from fbudin69500/update-DTIAtlasBuilder

ENH: Updating DTIAtlasBuilder from revision 70eab4fe1058c79ada560989f4db...