Optimize the function that change the images colors to black and white -refs BT#7410
Comment some deprecated validations
Merge branch '1.9.x' of https://github.com/beeznest/chamilo-lms-icpna into 1.9.x
Add modals for the footer links
Resolve merge
Footer changes
Reduce footer letter size
Merge branch '1.9.x' of https://github.com/FraGoTe/chamilo-lms-icpna into francis
Merge branch 'francis' into 1.9.x