Move all documentation below /docs (#20072)

* Move pages one level deeper under the /docs folder and fix broken links

* Fix broken links

* Flatten clef/qubes links to clef

* Remove path debugging from main template

docs/_doc/Connecting-to-the-network.md

@@ -144,7 +144,7 @@ the following into `<datadir>/geth/static-nodes.json`:
 ]
 ```
 
-You can also add static nodes at runtime via the js console using [`admin.addPeer()`](../interface/JavaScript-Console#addpeer):
+You can also add static nodes at runtime via the js console using [`admin.addPeer()`](../interface/javascript-console#addpeer):
 
 ```js
 admin.addPeer("enode://f4642fa65af50cfdea8fa7414a5def7bb7991478b768e296f5e4a54e8b995de102e0ceae2e826f293c481b5325f89be6d207b003382e18a8ecba66fbaf6416c0@33.4.2.1:30303")

docs/_doc/Ethereum-Specification.md

@@ -15,7 +15,7 @@ Specifications of all ethereum technologies, languages, protocols, etc.
 
 - [JavaScript API](https://github.com/ethereum/wiki/wiki/JavaScript-API#a)
 - [Generic JSON RPC](https://github.com/ethereum/wiki/JSON-RPC)
-- [JSRE admin API](../interface/JavaScript-Console#console-api)
+- [JSRE admin API](../interface/javascript-console#console-api)
 - [RLP](https://github.com/ethereum/wiki/wiki/RLP)
 - [ÐΞVp2p Wire Protocol](https://github.com/ethereum/wiki/wiki/%C3%90%CE%9EVp2p-Wire-Protocol)
 - [Web3 Secret Storage](https://github.com/ethereum/wiki/wiki/Web3-Secret-Storage-Definition)

docs/_doc/Ethereum-on-Android.md

@@ -3,7 +3,7 @@ title: Ethereum on Android
 ---
 Building Geth for Android is a non trivial task, as it requires cross compiling external C dependencies ([GNU Arithmetic Library](https://gmplib.org/)); internal C dependencies ([ethash](https://github.com/ethereum/ethash)); as well as the entire CGO enabled Go code-base to Android. This is further complicated by the Position Independent Executables (PIE) security feature introduced since Android 4.1 Jelly Bean, requiring different compiler and linker options based on the target Android platform version.
 
-To cope with all the build issues, the [`xgo`](https://github.com/karalabe/xgo) CGO enabled Go cross compiler is used, which assembles an entire multi-platform cross compiler suite into a single mega docker container. Details about using `xgo` can be found in the project's [README](https://github.com/karalabe/xgo/blob/master/README.md), with Ethereum specifics on the go-ethereum cross compilation [wiki page](Cross-compiling-Ethereum).
+To cope with all the build issues, the [`xgo`](https://github.com/karalabe/xgo) CGO enabled Go cross compiler is used, which assembles an entire multi-platform cross compiler suite into a single mega docker container. Details about using `xgo` can be found in the project's [README](https://github.com/karalabe/xgo/blob/master/README.md), with Ethereum specifics on the [go-ethereum cross compilation](../developers/cross-compiling-ethereum).
 
 TL;DR
 

docs/_doc/Japanese-Contracts-and-Transactions.md

@@ -13,7 +13,7 @@ Both types of accounts have an ether balance.
 
 Transactions can be fired from from both types of accounts, though contracts only fire transactions in response to other transactions that they have received. Therefore, all action on ethereum block chain is set in motion by transactions fired from externally controlled accounts.
 
-The simplest transactions are ether transfer transactions. But before we go into that you should read up on [accounts](../how-to/Managing-your-accounts) and perhaps on [mining](../how-to/Mining).
+The simplest transactions are ether transfer transactions. But before we go into that you should read up on [accounts](../interface/managing-your-accounts) and perhaps on [mining](../legacy/mining).
 
 ## Ether transfer
 

docs/_doc/Setting-up-monitoring-on-local-cluster.md

@@ -1,7 +1,7 @@
 ---
 title: Setting up monitoring on local cluster
 ---
-This page describes how to set up a monitoring site, [like this one](http://eth-netstats.herokuapp.com/), for your private network. It builds upon [this wiki article](Setting-up-private-network-or-local-cluster) and assumes you've created a local cluster using [this script (gethcluster.sh)](https://github.com/ethersphere/eth-utils).
+This page describes how to set up a monitoring site, [like this one](http://eth-netstats.herokuapp.com/), for your private network. It builds upon [this page](setting-up-private-network-or-local-cluster) and assumes you've created a local cluster using [this script (gethcluster.sh)](https://github.com/ethersphere/eth-utils).
 
 The monitoring system consists of two components:
 

docs/_doc/Setting-up-private-network-or-local-cluster.md

@@ -4,7 +4,7 @@ title: Setting up private network or local cluster
 This page describes how to set up a local cluster of nodes, advise how to make it private, and how to hook up your nodes on the eth-netstat network monitoring app. 
 A fully controlled ethereum network is useful as a backend for network integration testing (core developers working on issues related to networking/blockchain synching/message propagation, etc or DAPP developers testing multi-block and multi-user scenarios).
 
-We assume you are able to build `geth` following the [build instructions](../install-and-build/Building-Ethereum)
+We assume you are able to build `geth` following the [build instructions](../install-and-build/build-from-source)
 
 ## Setting up multiple nodes
 
@@ -115,5 +115,5 @@ I0216 10:01:40.094089 p2p/discover/udp.go:227] Listening, enode://890b6b5367ef60
 
 [This page](https://github.com/ethereum/wiki/wiki/Network-Status) describes how to use the [The Ethereum (centralised) network status monitor (known sometimes as "eth-netstats")](http://stats.ethdev.com) to monitor your nodes.
 
-[This page](Setting-up-monitoring-on-local-cluster) or [this README](https://github.com/ethersphere/eth-utils) 
+[This page](../doc/setting-up-monitoring-on-local-cluster) or [this README](https://github.com/ethersphere/eth-utils) 
 describes how you set up your own monitoring service for a (private or public) local cluster.