[client] Accept HatoholConnector options

Log search systems editor want to specify "pathPrefix" because CRUD API
URL for log search systems doesn't start with "/tunnel/".
[client] Add navi for log search system edit UI

UI doesn't exist yet.
[client][LogSearchSystems] Add edit UI
[client] Remove the last ","
[client] Update po
[client][test] Remove "log search systems" entry from navi

Why? I can see it in my Web brower...
[client][test] Add "log search systems" entry to navi in all tests
[client][LogSearchSystem] Fix wrong function name
Merge pull request #792 from project-hatohol/client-log-search-systems-add-editor

[client][LogSearchSystems] Add editor