changing message when importing file with empty header line -refs #6305
Set all as default in sessions list -refs #6312
Showing sessions with start date <= today -refs #6311
Showing active sessions with nb_days_access_after_end > 0 and nb_days_access_before_beginning -refs #6311
Merge pull request #88 from jmontoyaa/1.9.x

Updatin basque langs
Fixed issue with prerequisites failing when using subdirectories in the LP's TOC - refs #6405
Adding validation and Career Updated message -refs #6316
Changing suffix in name ofcareers and promotions copied -refs #6317
Merge pull request #86 from ycastillo/yoselyn.6312

Set all as default in sessions list -refs #6312
Merge pull request #85 from ycastillo/yoselyn.6305

changing message when importing file with empty header line -refs #6305
Filtering $career_id
blocking modifications in course categories -refs #6314
Fixing spaces -refs #6314
Merge pull request #90 from ycastillo/yoselyn.6314

blocking modifications in course categories -refs #6314
Merge pull request #89 from ycastillo/yoselyn.6316

Adding validation and Career Updated message -refs #6316
Fixing problem of loosing url_id when navigating -refs #6314
Fixing issue with commas in filenames - suggested by Kris Sinnaeve - refs #6415
Updated installation guides with fixed Chamilo Rapid launch command
Minor: avoid warning by checking if file exists before unlink()
fixing bug when adding course event -refs #6495