Deleted completely button pay
Removed completely button pay. FIxed issue #81
make use of CustomerCall.toString(). Issue #78
Reverted changes on GuiUser modificator for the Jlist of the bill
Creation of the bills in Customer class is now divided in functions
Fixed issue #88
Restyle Bill. Fixed Issue #61
Fixed issue #61
Merge remote-tracking branch 'github/luis2'
fix #87
minor numbering issue related to #87