Merge branch 'upstream/master'
 - define the TGT cookie lifetime more percisely in the CAS 3.0 specification (for non-LT and LT).
 - fixed typo in 3.0 spec, created pdf / html
Czech translation update
Merge pull request #402 from robertoschwald/master

CAS 3 Spec: more precise lifetime definition for normal- and Long Term support TGT/TGC
Correct and update Spanish translation
Correct and update Catalan translation
CAS-1398: Added contributing.md file

Also modified travis build to check for commit messages based on guidelines
CAS-1398: Added contributing.md file

Also modified travis build to check for commit messages based on guidelines
CAS-1398: Added contributing.md file

Also modified travis build to check for commit messages based on guidelines
CAS-1398: Added more keywords to commit messages
Merge pull request #406 from lukas-slansky/master

Czech translation update
Merge pull request #407 from alexhenrie/master

Correct and update Spanish and Catalan translations
NJORA: Changed SAMLBuilder features
Merge branch 'master' of github.com:Jasig/cas
Merge branch 'upstream/master'
CAS-1284: Validate and adopt CAS3 protocol rev
 - removed "url" parameter from /logout as discussed in dev-ml.
 - rev. 3.0 RC2
 - minor fixes, state CAS 4.0 as protocol 3.0 compliant.
Merge pull request #409 from Unicon/CAS-1398

CAS-1398: Adding a contributing.md file
Merge pull request #413 from robertoschwald/master

CAS-1284: Validate and adopt CAS3 protocol rev