use salted sha512 instead of unsalted md5 for storing passwords
add test to assure new hash method is used
reintegrate md5 password check for backwards compatibility
Merge branch 'master' into saltedsha
Merge branch 'saltedsha' into develop

Conflicts:
	Bonobo.Git.Server/Properties/AssemblyInfo.cs
remove obsolete todos
extract PasswordService
remove test dependency to EF by using an update hook instead of db context
+password upgrade releated test cases
fixed test cases
Ellipsis added to commit headers
Title to commit added
Prepare for a new release
Add missing french translation keys
Merge pull request #118 from embix/saltedsha

add backwards compatible upgrade of method to store hashed passwords
Merge pull request #121 from latop2604/frenchtranslation

Add missing french translation keys
Fix crash when repo contain GitLink node
Add clone button
Merge pull request #122 from latop2604/gitlink

Fix crash when repo contains GitLink node
Merge pull request #123 from latop2604/clone

Add clone button