Improve scheduler interfaces. Closes #71

improve scheduler interfaces

See logs directly from schedules
New Feature: import/export task schedules. Closes #79
Don't dependent directly of jersey, use jax-rs instead. Closes #74
Remove jersey servlet. Make all root resource paths absolute to the module.
Scheduler: make ids unique. Remove unecessary code of jaxrs initialization.
Scheduler: don't show all when listing individual logs.