have_alt_block link added to index2.html

src/page.h

@@ -730,6 +730,7 @@ namespace xmreg
                     {"hash_rate"         , hash_rate},
                     {"fee_per_kb"        , print_money(current_network_info.fee_per_kb)},
                     {"alt_blocks_no"     , current_network_info.alt_blocks_count},
+                    {"have_alt_block"    , (current_network_info.alt_blocks_count > 0)},
                     {"tx_pool_size"      , current_network_info.tx_pool_size},
                     {"block_size_limit"  , block_size_limit},
                     {"is_current_info"   , current_network_info.current},

src/templates/index2.html

@@ -40,7 +40,7 @@
             | Hash rate: {{hash_rate}}
             | Fee per kb: {{fee_per_kb}}
             | Block size limit: {{block_size_limit}} kB
-            | Alt blocks no: {{alt_blocks_no}}
+            | Alt blocks no: {{^have_alt_block}}{{alt_blocks_no}}{{/have_alt_block}}{{#have_alt_block}}<a href="/altblocks">{{alt_blocks_no}}</a>{{/have_alt_block}}
             {{^is_current_info}}
             | Data from {{age}} {{age_format}} ago
             {{/is_current_info}}