Sites local settings by site name

[iLLiCiTiT]

Description

Site settings are now stored under "roots" key which is not correct, also all sites have same inputs for roots which is also not right. In reality is should work almost the same as before this PR but there are changes that give ability to be ready for future changes. Your previous local settings won't work because hierarchy of stored data has changed.

Changes

• removed roots widget from local project overrides and replaced with sites widget (no difference in look)
• instead of expecting only roots as input it is possible to define different inputs (only strings)
  • using of this feature is now hardcoded and predefined to be able set roots for active sites until providers will have ability to tell what can be modified
• remote site combobox is hidden when there are no sites to set
• implemented get_site_local_overrides which returns local settings overrides for given project name and site name

Note

• PR is based on Sync server fix local drive #1115 and it's branch (used as source) change base to develop if is merged