add tenant-level data retentenion for availability metrics
fixing test
make the webapp work again with the wildfly maven plugin

The recent change to use Jackson 2 as the JSON provider caused some errors when
deploying with the wildfly maven plugin. I noticed that the plugin deploys an
earlier version of WF. I upgraded the plugin and that resolved the errpr. I
also need to configure the plugin to deploy using the C* backend since a
many of the new core APIs are not implemented for the memory backend.
refactor DataAccess into an interface
revert some of the changes from commit 65be1927

The refactoring in 65be1927 broke some of the old REST endpoints, and we want
to keep those funcitonal for now.
UI fix error in explorer  when 404 on metrics is found.
Push a change to get Travis to run again.
Revert "Revert for Travis."

This reverts commit 1c671f24f89ad6f3b98b6fc0896471e772eb20b4.
Revert "For Travis as well. There is nothing wrong in the code this is
just for Travis. UI fix error in explorer  when 404 on metrics is found."

This reverts commit d4efd670c103e8c2a643dff2ba8958926b79338d.
initial port of bucketing code to the new endpoint for fetching numeric data
Apply canonical ordering in pom.xml files using tidy:pom, see
http://maven.apache.org/developers/conventions/code.html#POM_Code_Convention
do not create multiple sessions

Hoping to see if this might fix the travis build issues; however, we should not
be creating multiple sessions as they are heavy weight. There should be really
be one per application.
Release 0.2.5
try to make travis build happy and add core api for fetching tenants
fix checkstyle error
Development 0.2.6-SNAPSHOT
add end point for fetching tenants
travis troubleshooting - output status of C* after failure
forgot back ticks
Merge pull request #76 from ppalaga/141204-tidy-pom

Apply canonical ordering in pom.xml files using tidy:pom, see
http://maven.apache.org/developers/conventions/code.html#POM_Code_Convention