Apply some love to the styling of the LSG

Improve basic API documentation

Performance check for community.openproject.com for 11.0

Journal data is not removed upon work package deletion

warning when data will be discarded

WYSIWYG editor incorrectly interprets underscores in function names as italics

The cost reports plugin is hidden unless the time tracking module is active

Position of work package attribute changes when starting editing

Work package no longer included in filter "Estimated time: none" when removing value for Estimated time

Custom action lists archived projects as options