HUE-1971 [beeswax] ANALYZE TABLE command autocompletion

Added new keywords to the editor and autocomplete
HUE-1972 [impala] Update built in function autocomplete

Updated function list
Separated editor modes
HUE-1970 [impala] COMPUTE STATS table_name

Added to the autocomplete and highlighting
HUE-1933 [impala] Fixing the SQL and hiding mapreduce button
HUE-1933 [impala] Export query result

Remove empty directories to export to.
Allow creating and choosing a directory to export to.
Impersonation issue fixed by adding "server_name" to design initialization.
use setInterval to force browser redirection.
HUE-1949 [impala] Friendler query expiration message

Update status of queries that are closed.
Fix error listing.
HUE-1341 [search] Support for dynamic fields