DOC: Update top links in landing page

Same intent as PR numpy#17365 -- point "Installation" links to Hugo, start
page with "What is NumPy", let Hugo page link to
"Troubleshooting ImportError".

Author: bjnath

doc/source/_templates/indexcontent.html

@@ -12,8 +12,9 @@ <h1>{{ docstitle|e }}</h1>
 <p><strong>For users:</strong></p>
 <table class="contentstable" align="center"><tr>
     <td width="50%">
-      <p class="biglink"><a class="biglink" href="{{ pathto("user/setting-up") }}">Setting up</a><br/>
-	<span class="linkdescr">Learn about what NumPy is and how to install it</span></p>
+      <p class="biglink"><a class="biglink" href="{{ pathto("user/whatisnumpy") }}">What is NumPy?</a><br/>
+	<span class="linkdescr">Who uses it and why</span></p>
+      <p class="biglink"><a class="biglink" href="https://numpy.org/install/">Installation</a><br/>
       <p class="biglink"><a class="biglink" href="{{ pathto("user/quickstart") }}">Quickstart</a><br/>
 	<span class="linkdescr">Aimed at domain experts or people migrating to NumPy</span></p>
       <p class="biglink"><a class="biglink" href="{{ pathto("user/absolute_beginners") }}">Absolute beginner's guide</a><br/>

doc/source/user/index.rst

@@ -3,18 +3,17 @@
 .. _user:
 
 ################
-NumPy User Guide
+NumPy user guide
 ################
 
-This guide is intended as an introductory overview of NumPy and
-explains how to install and make use of the most important features of
-NumPy. For detailed reference documentation of the functions and
-classes contained in the package, see the :ref:`reference`.
+This guide is an overview and explains the important features;
+details are found in :ref:`reference`.
 
 .. toctree::
    :maxdepth: 1
 
-   setting-up
+   whatisnumpy
+   Installation <https://numpy.org/install/>
    quickstart
    absolute_beginners
    basics

doc/source/user/install.rst

@@ -1,10 +1,7 @@
-****************
-Installing NumPy
-****************
-
-In most use cases the best way to install NumPy on your system is by using a
-pre-built package for your operating system.  Please see
-https://scipy.org/install.html for links to available options.
-
-For instructions on building for source package, see
-:doc:`building`. This information is useful mainly for advanced users.
+:orphan:
+
+****************
+Installing NumPy
+****************
+
+See `Installing NumPy <https://numpy.org/install/>`_.

doc/source/user/troubleshooting-importerror.rst

@@ -1,3 +1,5 @@
+:orphan:
+
 ***************************
 Troubleshooting ImportError
 ***************************
@@ -69,7 +71,7 @@ or conda.
 Using Eclipse/PyDev with Anaconda/conda Python (or environments)
 ----------------------------------------------------------------
 
-Please see the 
+Please see the
 `Anaconda Documentation <https://docs.anaconda.com/anaconda/user-guide/tasks/integration/eclipse-pydev/>`_
 on how to properly configure Eclipse/PyDev to use Anaconda Python with specific
 conda environments.