Fix hostgroup for zabbix api 1.4
Support for API version 1.4
VersionError added, this version works only with 2.0.4
Host creation spec passes on Zabbix 2.0.4
Templates fix (but not import) and host group fix
Merge branch 'zabbix-2.0' into zabbix2

Conflicts:
	lib/rubix/models/host.rb
	lib/rubix/models/host_group.rb
	spec/requests/host_request_spec.rb
	spec/support/integration_helper.rb
Move database logic to database_helper, add postgresql and mysql support
Host specs fixed
Application spec fixed
Connection spec fix
Item spec fixed
Fix users spec and response and connection specs
Fix trigger and user_group specs
Fix spec from user macro
Fix time series specs
Fix template.import
fix server_version check: it's API version 1.4 we're looking for
whoops, accidently an extra $ in zabbix_api program
development dependencies should all move into Gemfile, not gemspec from now on
stash