Corrected bug in triggering of Schedules

This correction will 
1. Fix return of "null" in getScheduledFireTime() for the first time.
2. Make sure that the scheduledFireTime is correct for all triggers.
Merge pull request #69 from vivganes/patch-1

Corrected bug in triggering of Schedules
Deleted trigerred() call in wrong place.

trigerred() was being called another time (in wrong place).  Removed the call in wrong place. Retaining the one in correct place.

This change has been tested in my local env.
Merge pull request #70 from vivganes/patch-1

Deleted trigerred() call in wrong place.
Update MongoDBJobStore.java

only get waiting trigger
Merge pull request #72 from huang1900z/master

Update MongoDBJobStore.java
1.8.0
Back to dev version
Update change log
1.8.0 is out
Merge pull request #73 from vivganes/patch-2

1.8.0 is out
Merge pull request #1 from michaelklishin/master

Syncing fork with source