Convert cost allocation basis units to translation token for predefined bases

[jmcameron]

Converts the 'units' field cost allocation basis items to be a translation token for predefined basis items so that they can be translated when possible.

Cleaned up/reorganized many of the cost allocation translation items into cost_center.json. Deleted the old fee_center.json files (not needed after the reorganization). Reworded some of the terms related to cost allocations.

Temporarily disabled the display of the old cost distribution pages. No code was deleted yet.

Closes #5926

Partially implements #5926: the cost allocation basis table is modified with the new data items but the formatting of the tabular display was not done yet.

TESTING

• Use bhima_test
• yarn; yarn build; yarn build:db
• Load the test data in server/models/migration/next/sample_cost_center_data.sql
• Try the functions under the Cost Center Management page and notice that the units for predefined basis items work properly (in English and French).
• Please review the French translations!

[mbayopanda]

LGTM 👍🏽

[mbayopanda]

The translation works fine, and the PR is LGTM. @jmcameron could you fix the mergin conflict so that this PR can be merged

[jmcameron]

bors r+

[bors]

Merge conflict.

[jmcameron]

bors r+

[bors]

Build succeeded:

• ci/semaphoreci/push: Integration Tests