Added quickmark functions to bindable shortcuts.

`mark_add` and `mark_evaluate` are now available as rebindable
shortcuts. Also added an entry in the zathurarc.5 manpage.

doc/man/zathurarc.5.rst

@@ -307,6 +307,13 @@ The following shortcut functions can be mapped:
 
   Zoom in or out.
 
+* ``mark_add``
+  Set a quickmark.
+
+* ``mark_evaluate``
+  Go to a quickmark.
+
+
 Pass arguments
 ^^^^^^^^^^^^^^
 Some shortcut function require or have optional arguments which influence the

zathura/config.c

@@ -466,6 +466,8 @@ config_load_default(zathura_t* zathura)
   girara_shortcut_mapping_add(gsession, "goto",              sc_goto);
   girara_shortcut_mapping_add(gsession, "jumplist",          sc_jumplist);
   girara_shortcut_mapping_add(gsession, "bisect",            sc_bisect);
+  girara_shortcut_mapping_add(gsession, "mark_add",          sc_mark_add);
+  girara_shortcut_mapping_add(gsession, "mark_evaluate",     sc_mark_evaluate);
   girara_shortcut_mapping_add(gsession, "navigate",          sc_navigate);
   girara_shortcut_mapping_add(gsession, "navigate_index",    sc_navigate_index);
   girara_shortcut_mapping_add(gsession, "print",             sc_print);