Set up spec.xml for proofreading: show solutions and red bounding boxes.
Merge branch 'master' into proofread
Merge branch 'master' into proofread
Merge branch 'master' into proofread
Merge branch 'master' into proofread
Merge branch 'master' into proofread
Merge branch 'master' into proofread
Bugfix to handling <correct>.
Center tables in latex preamble.
Bugfix to empty solution warning.
Merge branch 'master' into proofread
Merge branch 'master' into proofread
Make solutions visible in proofread branch.
Merge branch 'master' into proofread
Merge branch 'master' into proofread
Merge branch 'master' into proofread
Merge branch 'master' into proofread
Merge branch 'master' into proofread
Merge branch 'master' into proofread
Merge branch 'master' into proofread