Make locations (and sub-locations) available in navbar

[fwolfst]

The "Locations" menu entry in the navbar could have submenus (in the "form" of the locations) to access the locations directly. Maybe cropped to .. 6? entries, a bit like this:

building1
  |- floor1
    |-- room 1
    |-- server room
      |-- rack1
      |-- rack 2
  |- floor2
building3
  |- room X
building4
building5
building6
...(more) all locations

The quick and dirty solution would be to fetch the Locations from the view. The clean solution would be to subclass ApplicationController and get all the locations in a before_action (actually only if the reqest is not a XHR/json request, but we do not use these anyway) and then subclass all custom controllers from there. The reason would be that the DeviseController (login/forgot password etc) does not need to fetch the locations because it does not show the navbar.

[fwolfst]

@TheRealSyler Need any help or pointers in the right direction?

[TheRealSyler]

@fwolfst i got stuck on making a sub controller, the rest is pretty much done or easy to do.

[fwolfst]

@fwolfst i got stuck on making a sub controller, the rest is pretty much done or easy to do.

@TheRealSyler Feel free to push something. Although maybe the subcontroller approach is somewhat more difficult than what we need. I'd happily explore the different paths with you. In any way, it should result in relatively few lines of code that can easily be moved araound.

[TheRealSyler]

@fwolfst 552f09e, i will also add a function to get a tree like structure in the subemenu.