- releases list now shows programming language

- added menu link to test syntax

- fixes a small issue if the content of an asset was null (prevented page rendering)

- removed first accessed at column (not needed?)

- changed register component to use v1 login

- test points can now be displayed

- navigating back from own/group exercises or releases list no longer clears pagination data (sorting, search text, ...)
- all exercises sorting is now by last edited at

- create exercises test panels now display the test display index so one can easier identify the test (in do exercise and create exercise sites)

- added gzip output

- changed color of "could not count" inside tutor view and added it also to the manual assessment tab

- fixed issue where in the tutor view the run all tutor tests (normal and submit) would clear all results but not re-run previously passed tests
  - reproduce: clear all test results, run one test (must pass), run all tests, all tests are executed but the one already passed