[impala] Hive metastore app links if no permission to access it

Fix space stripping in Impala colum types
[core] Fix dump_config tests by testing an app setting instead of desktop

With the loading of the desktop config first done when adding the
app blacklist, the set_for_testing() seems to be lost when dumping
the global setting variable.
This is only on the dump_config page which uses the global variable.
set_for_testing() continues to work fine in apps, desktop or libs.

Just indentation cleaning on the dump_config template.
HUE-1948 [beeswax] Autocomplete support for multi queries

Added support for multiple queries separated by ;