improving the algorithm used to display the activities tree, taking into account more possible cases (the completion restriction of the activities, etc) adding an "eye" icon to the activities that have been viewed using bold letters to indicate that the activity hasn't been started fixing bugs
- Improving performance when uploading a zip file: Removing unnecesary revoking of permission 'read' on resources. - Fixing message keys in en_US locale. - Adding message keys for locale es_GT.