Update affected .glyphicon-* CSS classes to use new codepoints

.glyphicon-briefcase: U+1F4BC -> U+E139
.glyphicon-calendar:  U+1F4C5 -> U+E109
.glyphicon-pushpin:   U+1F4CC -> U+E146
.glyphicon-paperclip: U+1F4CE -> U+E142
.glyphicon-camera:    U+1F4F7 -> U+E046
.glyphicon-lock:      U+1F512 -> U+E033
.glyphicon-bell:      U+1F514 -> U+E123
.glyphicon-bookmark:  U+1F516 -> U+E044
.glyphicon-fire:      U+1F525 -> U+E104
.glyphicon-wrench:    U+1F527 -> U+E136

less/glyphicons.less

@@ -224,13 +224,13 @@
 .glyphicon-cloud-upload           { &:before { content: "\e198"; } }
 .glyphicon-tree-conifer           { &:before { content: "\e199"; } }
 .glyphicon-tree-deciduous         { &:before { content: "\e200"; } }
-.glyphicon-briefcase              { &:before { content: "\1f4bc"; } }
-.glyphicon-calendar               { &:before { content: "\1f4c5"; } }
-.glyphicon-pushpin                { &:before { content: "\1f4cc"; } }
-.glyphicon-paperclip              { &:before { content: "\1f4ce"; } }
-.glyphicon-camera                 { &:before { content: "\1f4f7"; } }
-.glyphicon-lock                   { &:before { content: "\1f512"; } }
-.glyphicon-bell                   { &:before { content: "\1f514"; } }
-.glyphicon-bookmark               { &:before { content: "\1f516"; } }
-.glyphicon-fire                   { &:before { content: "\1f525"; } }
-.glyphicon-wrench                 { &:before { content: "\1f527"; } }
+.glyphicon-briefcase              { &:before { content: "\e139"; } }
+.glyphicon-calendar               { &:before { content: "\e109"; } }
+.glyphicon-pushpin                { &:before { content: "\e146"; } }
+.glyphicon-paperclip              { &:before { content: "\e142"; } }
+.glyphicon-camera                 { &:before { content: "\e046"; } }
+.glyphicon-lock                   { &:before { content: "\e033"; } }
+.glyphicon-bell                   { &:before { content: "\e123"; } }
+.glyphicon-bookmark               { &:before { content: "\e044"; } }
+.glyphicon-fire                   { &:before { content: "\e104"; } }
+.glyphicon-wrench                 { &:before { content: "\e136"; } }