spenke91

Closes #1605 **_Describe your changes here:_** Based on the discussion we had regarding issue https://github.com/DLR-AMR/t8code/issues/1508 , this PR renames some member variables of `t8_forest` and `t8_tree`: Their names now contain...

Improvement: Renamed forest functions to explicitly say leaf elements

2

Closes #1604 **_Describe your changes here:_** Based on the discussion we had regarding issue #1508 , this PR renames some forest-related functions: Their names now expicitly use "leaf_elements" whenever suitable....

Subissue of #1508.

Sub-issue of #1508

Closes #1279 **_Describe your changes here:_** In line with #1279, this PR removes the `forest` argument, i.e., the uncommitted new forest, from the adapt callback arguments. So far, this is...