[jb] Also show jobs according to acl modify permissions

e.g.
set mapreduce.job.acl-modify-job=UserA; : kill job
[jb] Also show jobs according to acl view permissions

e.g.
set mapreduce.job.acl-view-job=UserA;

Note: this only work when going directly to the single job page:
The job will still not appear on the main list of jobs (MR1/MR2
APIs do not allow a batch check of the acl permissions).
[jb] Basic test with mocking for view and modify acl and MR1
[core] Add note about threaded option and Oracle databases
[useradmin] LDAP DNs should accept spaces

1. When a DN is being provided, it may have spaces. The corresponding username retrieved from LDAP should not have spaces nor colons.
2. When a username is provided, it should not have spaces nor colons.
3. Group names can have any character apparently.
HUE-1917 [oozie] Crontab support in dashboard

Extended jqCron to support readonly too
Added jqCron to coordinator list and coordinator details
HUE-2149 [search] More facets are displayed when limit is small

Fixed display bug
HUE-2157 [search] Gridlayout field list min height could match number of rows

Added height change when the rows space is bigger than the list
HUE-2148 [search] Download query can be missing some columns
HUE-2143 [beeswax] MR job links are not always displayed

Job Browser understands either job_XXX or application_XXX.
[spark] Is empty result should work with any type of data
HUE-2137 [indexer] Support core creation in non Solr cloud mode

Managing instance directories under CORE_INSTANCE_DIR configured path.
Only local solr instances allowed. Will not work with other instances.
Seems to be a bug in solr for unloading a core.
[core] Fix LDAP tests
[core] Fix master tests