Some updates, fixes and changes, up to 1.1.10 - #59

ADD: cmds.html: cm_ShowTabsList.
ADD: cmds.html: Install plugins from archive via cm_AddPlugin.
ADD: cmds.html: Additional parameter 'separator=' for cm_CopyFullNamesToClip, cm_CopyPathOfFilesToClip, cm_CopyPathNoSepOfFilesToClip.
ADD: commandline.html: A note about macOS.
ADD: configuration.html: Section 'Colors > File panels': The 'GridLine' key.
ADD: configuration.html: Section 'File associations': '{!DC-VIEWER}' in Quick view.
ADD: configuration.html: Section 'Miscellaneous': 'Default single-byte text encoding'.
ADD: configuration.html: Section 'Tools > Editor': 'Group Undo'.
ADD: configxml.html, syncdirs.html: 'DateTimeFormat'.
ADD: help.html: 'Calculate check sum': 'File format'.
ADD: help.html: 'Context menu': 'Share' submenu and 'Other...' item in macOS.
ADD: lua.html: SysUtils.GetTempName, LazUtf8.DetectEncoding.
ADD: shortcuts.html: Differ: cm_Find, cm_FindNext, cm_FindPrev, cm_GotoLine.
ADD: shortcuts.html: Viewer: cm_GotoLine, cm_ImageCenter, cm_ShowAsDec, cm_ShowOffice, cm_StretchImage, cm_StretchOnlyLarge, cm_Undo, cm_WrapText.
ADD: variables.html: COMMANDER_EXE, COMMANDER_INI_PATH and DC_CONFIG_PATH environment variables.
ADD: viewer.html: 'Plugins' submenu, menu in Quick view, some details about the opening of files.
UPD/CHG/FIX: Screenshots.
UPD: configuration.html: changes in settings storage, list of configuration files and related changes ('settings'/'default' subdirs, 'tabs.xml', 'colors.json' and changes in settings secctions, etc.).
UPD: configuration.html: Section 'Tools > Terminal': Autodetect terminal in macOS.
UPD: faq.html: 'Wrap text' instead of 'Show as Wrap text'.
UPD: help.html: 'Compare by Contents': A note about colors.
UPD: help.html: 'Wipe' command: A note about SSD.
UPD: help.html: File properties window, screenshots.
UPD/CHG: lua.html: Dialogs.InputListBox.
UPD: plugins.html: ftp.wfx (details about SSL and TLS protocols, SSH-agent).
UPD: syncdirs.html: A note about colors.
UPD: viewer.html: 'Additional settings': Link to 'Colors', link to configxml.html.
FIX: help.html: Description of the cm_Wipe command.
DEL: All alpha/beta version labels.
DEL: All notes about macOS support.
DEL: configxml.html: DefaultTextEncoding (see 'Miscellaneous').
DEL: configxml.html: Deprecated (see 'Colors' and 'Colors > File panels'): PathLabel; ImageBackColor1, ImageBackColor2; Info, Error, Success; Added, Deleted, Modified; Left, Right, Unknown.
DEL: faq.html: 1.6 (deprecated), 5.6 and 6.2 (see 'viewer.html' and 'help.html#iface_files').
DEL: help.html: Drag-and-drop: Outdatedd advice.
DEL: shortcuts.html: Viewer: cm_ShowAsWrapText.
Other some details and small fixes/changes.