work for smtp appender / sending mails
1) add order by (restricted) from UI
2) correctly reschedule previously scheduled tasks based on history.
fixes
email tweaks
changes for 027
fixing compile errors
fix this
more work for pausing.
little changes.
0.2.9
some minor fixes/ more logging.
fix stuff
introduce maxFailuresBeforePause etc.
Merge branch 'master' into 029

Conflicts:
	SingularityBase/src/main/java/com/hubspot/singularity/SingularityPendingRequestId.java
	SingularityBase/src/main/java/com/hubspot/singularity/SingularityRequest.java
	SingularityBase/src/main/java/com/hubspot/singularity/SingularityRequestBuilder.java
	SingularityBase/src/main/java/com/hubspot/singularity/SingularityTaskIdHistory.java
	SingularityService/singularity.sql
	SingularityService/src/main/java/com/hubspot/singularity/SingularityModule.java
	SingularityService/src/main/java/com/hubspot/singularity/data/SingularityRequestValidator.java
	SingularityService/src/main/java/com/hubspot/singularity/data/history/HistoryJDBI.java
	SingularityService/src/main/java/com/hubspot/singularity/data/history/HistoryManager.java
	SingularityService/src/main/java/com/hubspot/singularity/data/history/JDBIHistoryManager.java
	SingularityService/src/main/java/com/hubspot/singularity/data/history/mappers/SingularityTaskIdHistoryMapper.java
	SingularityService/src/main/java/com/hubspot/singularity/resources/HistoryResource.java
	SingularityService/src/main/java/com/hubspot/singularity/scheduler/SingularityScheduler.java
	SingularityService/src/main/java/com/hubspot/singularity/smtp/SingularityMailer.java