make SingleEvent.java
Creates int getMonthLastDay(),
void SetID(int newID), int GetID(),
void SetYear(int), int GetYear(), 
void SetMonth(int), int GetMonth(), 
void SetDay(int), int GetDay().

NOT TESTED YET...
implement setter, getter
merged SingleEvent.java
event list view
temporary commit caused by Gylee
event calendar
SingleEvent constructor
Insert(), Search(), Delete(), Save(), Load() Done!
event list
event modify activity
Merge branch 'sjlee2' into gylee

Conflicts:
	practiCal/src/com/tejava/practical/SingleEvent.java
Merge branch 'iyjung' into gylee

Conflicts:
	practiCal/src/com/tejava/practical/MainActivity.java
add date/time setting
event list view
Merge branch 'iyjung' into gylee
Search method modified!
ok/delete button
Merge branch 'iyjung' into gylee
modify merged