JVET-R0058: the combination of RPR, subpictures, and scalability

See merge request !1634

# Conflicts:
#   source/Lib/CommonLib/TypeDef.h

JVET-R0332: Grouping syntax elements in SPS based on slice type

See merge request !1568

Modify chroma QP mapping table

See merge request !1636

JVET-Q0397: Scalable nesting SEI for subpictures

See merge request !1642

Fix #1068: bins counting issue

See merge request !1641

JVET-R0078: cleanup for chroma tc and beta DBF offset in PPS, PH and SH

See merge request !1617

# Conflicts:
#   source/Lib/CommonLib/TypeDef.h

JVET-Q0404: add a flag to subpicture info SEI to indicate constant bitrate

See merge request !1644

JVET-R0194: Constraint for referencing parameter set from different layer

See merge request jvet/VVCSoftware_VTM!1639

JVET-R0099: Proposal 2 and 3, DPB and HRD parameter signaling for OLS

Includes:
- added flag
- minor updates for variable names
- update for trace strings according to JVET-R2001-vA

fix indentation after !1598

See merge request !1643

JVET-R0103 Proposal 1: Decoding unit signaling change

See merge request !1598

JVET-R0110: Fix interface of  JVET-R0110 of mixed lossy lossless coding

See merge request !1621

Fix tickets #1062, #1063: Add layerId condition as described in #1062

See merge request !1637

JVET-R0162 proposal1: change the signaling of wraparound offset to picture width minus wraparound offset

See merge request !1625

JVET-R0162 proposal1: change the signaling of wraparound offset to picture width minus wraparound offset

JVET-R0107: Proposal 2 - VPS signaling change and updated inference rule

JVET-R0112: Picture header semantics cleanup for gdr_or_irap_flag

See merge request !1629

JVET-R0188: signalling of slice width and height

See merge request !1575

# Conflicts:
#   source/Lib/CommonLib/TypeDef.h

BitstreamExtractor: fix re-encapsulation of input NAL units getting written back to the bitstream

See merge request !1638

JVET-Q0488: Constraint on number of identical SEI messages per picture.

See merge request !1491