Issue #2670730 by chr.fritsch, robpowell, alexpott, tstoeckler, Berdir, bojanz, dawehner: Provide a delete action for each content entity type

Issue #1986606 by jibran, pcambra, vijaycs85, dawehner, andypost, mbovan, Arla, adnen, vprocessor, tkuldeep17, xjm, kim.pepper, dobe, snig, larowlan, miro_dietiker, tim.plunkett, Berdir, Lendude, plach, olli, damiankloip: Convert the comments administration screen to a view

Issue #2600666 by tim.plunkett: Route definitions using entity type paramconverters with serial IDs should add an integer requirement

Issue #2398075 by andypost, sarav.din33, larowlan, nemethf, hussainweb: Breadcrumbs for comment entity

Issue #2396537 by joachim, prajaankit, shackr, msound: page title for the 'Add comment type' form says only 'Add'

Issue #2228763 by larowlan, alexpott, martin107, jessebeach, xjm: Create a comment-type config entity and use that as comment bundles, require selection in field settings form.

Issue #1978904 by jibran, andypost, h3rj4n, larowlan, shanethehat, pcambra, Xano: Convert comment_admin() to a Controller.

Issue #2109303 by damiankloip, ParisLiakos: Convert CSRF checks in controllers to the routing system.

Issue #2098011 by larowlan: Support dynamic route parameters to enhance comment admin paths with entity type and field name from comment bundle.

Issue #2106349 by plach, dawehner, Gábor Hojtsy: Fixed Comment translation overview has broken local tasks.

Issue #2095121 by clemens.tolboom, jibran: Ensure every path in routing.yml files has a leading slash.

Issue #2091411 by damiankloip, dawehner: Provide an easier mechanism for a route definition wrapped by module_exists().

Issue #731724 by larowlan, andypost, dixon_, tsvenson: Convert comment settings into a field to make them work with CMI and non-node entities.

Issue #2089635 by tim.plunkett, disasm, larowlan: Convert non-test non-form page callbacks to routes and controllers.

Issue #2051097 by dawehner, Manuel Garcia, tlattimore, neclimdul: Change 'pattern' to 'path' in *.routing.yml files.

Issue #1981368 by tim.plunkett, Crell, webchick: Convert all routes to 'module_name().foo_bar()' naming convention.

Issue #1991684 by Wim Leers, rcaracaus, amateescu, msonnabaum: Fixed Node history markers (comment & node 'new' indicator, 'x new comments' links) forces render caching to be per user.

Issue #1978958 by jibran, disasm, kgoel, Pancho, vijaycs85, cosmicdreams, dawehner, wamilton: Convert comment_reply() to a Controller.

Issue #1946348 by splatio, jibran, kim.pepper, David Hernández, tim.plunkett | mtift: Convert all of confirm_form() in comment.admin.inc to the new form interface.

Issue #1978914 by mparker17, shanethehat, dawehner, tim.plunkett, juampy: Convert comment_permalink() to a Controller.

Issue #1978948 by pcambra, rgristroph, oenie, kgoel, mparker17: Convert comment_approve() to a Controller.