gantt plugin - Proposal new features

[nuria2c]

We use the plugin and it works very well for us, but we are missing some functionalities. Could you consider including them in future versions?

Improvements for the filter: make it search in the titles of projects, tasks, and subtasks.
Export format: try to add some format like PDF or Excel for printing.
Add the option to Show/Hide linked tickets in subtasks and make them clickable. The idea is that it should be optional. They should only be displayed if "Show" is selected.
Add the possibility to add tickets directly, just like it currently allows adding new subtasks. Provide the option to add tickets in subtasks and have them linked to the project and the project task.