Add footer navigation to the DLang specification

Author: wilzbach

dlang.org.ddoc

@@ -488,4 +488,6 @@ YELLOW=$(SPANC yellow, $0)
 YES=$(CHECKMARK)
 
 PROJECT_SOURCE_DIR=
+
+FA_ICON=<i class="fa fa-$1" aria-hidden="true"></i>
 _=

orgs-using-d.dd

@@ -209,7 +209,6 @@ $(P
 
 Macros:
     TITLE=Organizations using the D Language
-    FA_ICON=<i class="fa fa-$1" aria-hidden="true"></i>
     FA_HIRING=$(FA_ICON rocket) $(HTTP $1, Hiring)
     FA_GITHUB=$(FA_ICON github) $(HTTPS github.com/$1, Github)
     FA_TALK=$(FA_ICON youtube-play) $(HTTP $1, $2)

spec/abi.dd

@@ -954,6 +954,7 @@ $(H3 $(LNAME2 codeview, Codeview Debugger Extensions))
 	$(P The $(LINK2 http://ddbg.mainia.de/releases.html, Ddbg) debugger
 	supports them.)
 	)
+$(SPEC_SUBNAV_PREV_NEXT memory-safe-d, Memory Safety, simd, Vector Extensions)
 )
 
 Macros:

spec/arrays.dd

@@ -983,6 +983,7 @@ $(H2 $(LNAME2 implicit-conversions, Implicit Conversions))
         )
 
         $(P Where $(D U) is a base class of $(D T).)
+$(SPEC_SUBNAV_PREV_NEXT statement, Statements, hash-map, Associative Arrays)
 )
 
 Macros:

spec/attribute.dd

@@ -813,6 +813,7 @@ pragma(msg, __traits(getAttributes, typeof(a))); // prints tuple("hello")
             attributes accumulate or override earlier ones is also up to how the user
             interprets them.
         )
+$(SPEC_SUBNAV_PREV_NEXT property, Properties, pragma, Pragmas)
 )
 
 Macros:

spec/class.dd

@@ -1343,6 +1343,7 @@ $(SECTION3 $(LEGACY_LNAME2 ConstClass, const-class, Const, Immutable and Shared
         from it are also const, immutable or shared.
     )
 )
+$(SPEC_SUBNAV_PREV_NEXT struct, Structs and Unions, interface, Interfaces)
 )
 
 Macros:

spec/const3.dd

@@ -464,6 +464,7 @@ void main()
 	)
 
 
+$(SPEC_SUBNAV_PREV_NEXT enum, Enums, function, Functions)
 )
 
 Macros:

spec/contracts.dd

@@ -256,6 +256,7 @@ $(H2 $(LNAME2 references, References))
 	$(LINK2 http://jan.newmarch.name/java/contracts/paper-long.html, Adding Contracts to Java)
 	)
 
+$(SPEC_SUBNAV_PREV_NEXT template-mixin, Template Mixins, version, Conditional Compilation)
 )
 
 Macros:

spec/cpp_interface.dd

@@ -892,6 +892,7 @@ foo(cast(immutable)&i, &i);
 )
 )
 
+$(SPEC_SUBNAV_PREV_NEXT interfaceToC, Interfacing to C, objc_interface, Interfacing to Objective-C)
 )
 
 Macros:

spec/ddoc.dd

@@ -1050,6 +1050,7 @@ $(P
     can be found on our $(LINK2 https://wiki.dlang.org/Community:Open_Source_Projects, wiki page).
 )
 
+$(SPEC_SUBNAV_PREV_NEXT iasm, D x86 Inline Assembler, interfaceToC, Interfacing to C)
 )
 
 Macros: