[server] Add skeleton of ArmRedmine class
[servre][test] Add a fixture for Redmine issues
[ArmRedmine] Add basic implementation to get issues
[ArmRedmine] Fix a wrong HTTP method name
[testArmRedmine] Add a skeleton
[ArmRedmine] Build query to filter issues
[ArmRedmine] Add a comment & fix a wrong filter in a comment
[ArmRedmine] Build the request URL at constructor

Becuase it never changes.
[testArmRedmine] Test the base query string
[testArmRedmine] Fix a name of a test

test_getQuery ->
test_baseQueryString
[ArmRedmine] Remove a needless local variable
[ArmRedmine] Handle HTTP error

A test will fail because some functions aren't implemented yet.
[ArmRedmine] Add a callback function for the "authenticate" signal of SoupSession
[ArmRedmine] Add a destructor of Impl
[testArmRedmine] test_oneProc: Set a user
[RedmineAPIEmulator] Implement GET method for issues
[ArmRedmine] Add a skeleton of a function to parse response
[ArmRedmine] Add a skelenton of a function to parse an issue
[ArmRedmine] Check the result of JSONParserAgent::startObject()
[ArmRedmine] Use ArmBase::ArmPollingResultk to follow the master branch