Implement access levels for projects

[osma]

Fixes #237

[codecov]

Codecov Report

Merging #246 into master will increase coverage by 0.02%.
The diff coverage is 100%.

@@            Coverage Diff             @@
##           master     #246      +/-   ##
==========================================
+ Coverage   99.21%   99.24%   +0.02%     
==========================================
  Files          48       48              
  Lines        2179     2249      +70     
==========================================
+ Hits         2162     2232      +70     
  Misses         17       17

Impacted Files	Coverage Δ
tests/test_rest.py	100% <100%> (ø)	⬆️
annif/project.py	100% <100%> (ø)	⬆️
annif/cli.py	99.41% <100%> (ø)	⬆️
tests/test_cli.py	100% <100%> (ø)	⬆️
tests/test_project.py	100% <100%> (ø)	⬆️
annif/rest.py	100% <100%> (ø)	⬆️

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 4e1d6cf...c751725. Read the comment docs.

[osma]

This pull request introduces 2 alerts when merging c751725 into 4e1d6cf - view on LGTM.com

new alerts:

• 2 for Module is imported with 'import' and 'import from'

---

Comment posted by LGTM.com