[FIX]issues in event

[IMP]improved reporting and android tip

[IMP]remove event's ticket form menu from customize menu on website

[IMP]improved code

[IMP]set 0 as unlimited and set unlimited tickets on website

[IMP]test case set event as limited.

[IMP]on tickets 0 as unlimited, remove depedency on registration tab limited and unlimited.

[IMP]improve the order now button

[IMP]make invisible instead of remove

[IMP]replace openerp tag to odoo tag and remove data tag

[REV]revert changes of css