Improved the autocomplete input for modules

* pandora_console/include/ajax/module.php: Improved the module name search.

* pandora_consle/include/functons_html.php: Improved the autocomplete input
	for modules.
Improvements on the Planned Downtime section

* pandora_console/godmode/agentes/planned_downtime.editor.php: Fixed an error
	which made impossible the creation of new periodic downtimes.

* pandora_console/godmode/agentes/planned_downtime.export_csv.php: Added file.
	Exports the planned downtimes list to a CSV file.

* pandora_console/godmode/agentes/planned_downtime.list.php: Added a new form
	to filter the list. Added pagination. Changed the items order. Error fixes.
Now the planned downtimes CSV shows the affected elements
Added support to create scheduled downtimes with past dates

* pandora_console/godmode/setup/setup_general.php,
  pandora_console/include/functions_config.php: Added a config token
	to allow the creation of scheduled downtimes in the past.

* pandora_console/godmode/agentes/planned_downtime.editor.php: Now
	is possible to create a scheduled downtime with a past date
	if the config token is activated.
Improved the warning messages on the planned downtimes edit section
Fixed the date filter of the list
Improved the planned downtimes calculation for the SLA functions

Now the functions "reporting_get_agentmodule_sla" and
"reporting_get_agentmodule_sla_array" do the planned downtimes
calculation correctly.
Moved some code to the new function "reporting_get_planned_downtimes_intervals"
Do not delete not init modules by default.

An option has been added to the Pandora FMS Console Setup to enable the
deletion of these modules.
Remove 'sla_period'. Ticket #1282
Clarify better the default encoding for windows
Auto-updated build strings.
Fixed sql error in event list.
Changed values 'post_process', 'interval_module', 'unit' in System Update network component. Ticket #1283
Changed 'post_process' format from tnetwork_component. Ticket #1283.
Fixed a bug that made the installer crash when called without arguments.
Server tasks should be executed on the master server only.
The server generates per group agent statistics, not module statistics!

Module statistics in the tactical view were broken when realtimestats
was disabled. Per group agent statistics were used as if they were per
group module statistics.
Added the function "reporting_get_planned_downtimes".

* pandora_console/include/functions_reporting.php: The new function
	"reporting_get_planned_downtimes" return a planned downtimes
	array with the planned downtimes that affect the passed modules
	on an specific datetime range.
	Improved two function calls on the function
	"reporting_render_report_html_item".
Fixed the OS type detection for the uninstaller.