Merge pull request #1131 from Eric-Brison/3.3-I2785

introduce docManager classe(closes #2785)
Merge pull request #1132 from Eric-Brison/3.3-I2785

refactor(docmanager): replace deprecated new_doc, getTdoc, - part 1 (fixes #2785)
Merge pull request #1133 from Eric-Brison/3.3-I2785

refactor(docmanager): replace deprecated new_doc, getTdoc, - part 2 (fixes #2785)
Merge pull request #1134 from Eric-Brison/3.3-I2785

refactor(docmanager): replace deprecated new_doc, getTdoc, - part 3 - (fixes #2785)
fix(doc): use localized title in relation if family detected (refs #4692)
fix(manual): delete obsolete internal documentation (refs #4695)
refactor(te): Correct TransformationEngine class name (refs #4607)
Merge pull request #1136 from Eric-Brison/3.3-I4692

fix(doc): use localized title in relation if family detected (closes #4692...
Merge pull request #1138 from Eric-Brison/3.3-I4695

fix(manual): delete obsolete internal documentation (closes #4695)
Merge pull request #1139 from eguaj/3.3-A4607

refactor(te): Correct TransformationEngine class name (fixes #4607)
refactor(docmanager): replace deprecated new_doc, getTdoc, - part 4 - (refs #2785)
refactor(docmanager): replace deprecated new_doc, getTdoc, - part 5 - (refs #2785)
refactor(docmanager): replace deprecated new_doc, getTdoc, - part 6 - (refs #2785)