[beeswax] Send watch status when no error

Cleaned up error reporting a bit
HUE-1896 [beeswax] Query logs are queing up
HUE-1892 [oozie] Permission denied for hive-site.xml for Hive action on workflow

Rename hive-site.xml example to hive-config.xml.
Add a note on the editor of Hive action.
Cleaner History page with direct link to dashboard from the editor.
HUE-1894 [beeswax] Some errors are not reseted at query execution

Reset error widgets at execution time.
HUE-1723 [beeswax] Example SQL text should not be executable
[i18n] Removing mo file
HUE-1887 [oozie] Support dashboard Coordinator and Workflow action SLA

Pass #1
SLA main page:
- add one more day in the end date
- sort list by nominal time
- combine id and parent_id
- make date filtering easier to disable
- make SLA properties parameterizable

All:
Support Coordinator SLA, Workflow action SLA
[beeswax] Fix execute query button for temporary queries
[oozie] Credentials can be combined comma separatedly in one action

Tested with hive and hiveserver2.
We should update the properties before deploying.
[beeswax] Only close queries that are not running
HUE-1857 [oozie] Allow import workflows with subworkflow identified at runtime

Fix subworkflow ID handling so that we can see what subworkflow is selected.
Make subworkflow optional in the editor as well.
[core] Set en locale not fuzzy
[i18n] Removing mo files from the repository
HUE-1902 [oozie] Update coordinator dataset action is broken

ko.clean was removing the data attribute.
HUE-1857 [oozie] Allow import workflows with subworkflow identified at runtime

Save workflow without workflow in subworkflow action.
[core] fix result monitoring
HUE-1905 [core] Add security handling for yarn and mr2

Reuse security_enabled in yarn config section for both yarn and MR2 security.
Add kerberos handler for all log calls and yarn/mr2 api clients.
If a particular service is not kerberized, it should still work
since SPNEGO seems to work with insecure clusters.
HUE-218 [beeswax] Add mechanism to kill a Hive query

Works with Yarn.
Also fix query cancelling that was using the wrong id
[core] Ignore all the mo files except the ones from third parties in ext-py
HUE-1909 [impala] No errors are displayed

In both Impala/Beeswax:
- create table already exists three times
- create aaaaaaa thre times
- one multiple query three times: show tables, create aaaaaa, select * from sample_07
- explaine with good and bad synxtax several times