Resolve "Users sorting by name not available"

Closes #808

See merge request !864

support for jdk 11 added

See merge request !863

Resolve "make code compatible with java 11"

Closes #810

See merge request !862

Resolve "Suggestions for enhancement (v12)"

Closes #447

See merge request !861

Resolve "Comment table changes"

Closes #859

See merge request !860

Resolve "deprecacy information for data overlay"

Closes #838

See merge request !859

we need to compare to 'true' because we might get null on the left side which cannot be resolved to boolean