WIP: Rename project -> board, board -> column

[lunny]

No description provided.

[delvh]

Should we perhaps make this PR breaking by also renaming the config options
([repository].{DEFAULT,DISABLED}_REPO_UNITS, (description in [ui].ISSUE_PAGING_NUM),[project].*)
?

[lunny]

Should we perhaps make this PR breaking by also renaming the config options ([repository].{DEFAULT,DISABLED}_REPO_UNITS, (description in [ui].ISSUE_PAGING_NUM),[project].*) ?

Maybe add depreciated in all [project] section configurations and start a new section named [board]?
[ui].ISSUE_PAGING_NUM should be moved to database based system configuration.

[delvh]

[ui].ISSUE_PAGING_NUM: for that I simply meant the description, as it's probably best to purge project completely from the words used in this repo to prevent confusion.

Maybe add depreciated in all [project] section configurations and start a new section named [board]?

That was also my intention.
We can also deprecate the now invalid values inside {DISABLED,DEFAULT}_REPO_UNIT, so that this PR does not break anything for now, only to warn that it will be removed in a later version.

[lunny]

Closed as too many conflicts.