scm refactor

- support multiple repositories
- module should be set per each file
- no admin part to administer
- improved svn hook
- workflow handleSCMCheckins module param is always null, workflow method may set $usr_id
fixfsfaddr.sed
Add README and LICENSE
move files to project root
add .gitignore
exclude files from export
move common code to helpers
move match issue pattern matching to function
svn: restructure code to be more modular