Fix formatting: braces, spaces, indentation

See merge request !1825

Fix formatting: braces, spaces, indentation

See merge request !1824

Remove code related to cross-component prediction

See merge request !1821

Fix formatting: braces, spaces, indentation

See merge request !1823

Remove code related to RDPCM

See merge request jvet/VVCSoftware_VTM!1818

Clean up chroma QP table signalling

See merge request !1811

JVET-S0138: move GCI flags to PTL

See merge request !1817

(1) move frame_only_constraint_flag and single_layer_constraint_flag outside the GCI syntax structure into the PTL syntax structure
(2) rename single_layer_constraint_flag to multi_layer_enabled_flag
(3) change ptl_alignment_zero_bit to ptl_reserved_zero_bit

JVET-S0098 Item 3: Add non_subpic_layers_fraction syntax element

See merge request !1813

JVET-S0066: gci_three_minus_max_log2_ctu_size_constraint_idc and...

See merge request !1809

JVET-S0203 Aspects 1 and 2: Reverse loop over layers

See merge request !1815

JVET-S0066: gci_three_minus_max_log2_ctu_size_constraint_idc and gci_no_luma_transform_size_64_constraint_flag

JVET-S0176: On the subpicture level information SEI message

See merge request jvet/VVCSoftware_VTM!1749

JVET-R0294: Allow decoded picture hash SEI messages to be nested in subpicture context

See merge request !1784

Rename syntax elements to match spec and add range checks.
This should address JVET-S0130 aspect 1 (JVET-S0144 item 9.a)

JVET-S0193: Move no_output_of_prior_pics_flag from PH to SH

See merge request !1781

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

Fix for !1793 (JVET-R0270): Considering CRA that is preceded by EOS

See merge request !1806

Fix parsing of APS after !1795

See merge request !1808

Check that reference index is in 0..15 range before checking for scaling

See merge request !1807

JVET-S0219 aspect2 : Change the order aps_params_type to place before aps_adaptation_parameter_set_id

See merge request !1795

Fix #1155: Remove duplicate conditions in deblocking

See merge request !1799