Some minor fixes in tutorial

docs/source/tutorial/tutorial01.rst

@@ -72,13 +72,13 @@ Backup that Database!
 
 **Junior**
 
-  Sounds like less work for me.  I like it. 
+  Sounds like less work for me.  I like it.
 
 **Senior**
 
   Ok then, let's try on your laptop first.
 
-  First of all you have to follow the installation instructions XXX. 
+  First of all you have to follow the `installation instructions </the_project/install_and_configure>`_. 
 
 **Junior**
 

docs/source/tutorial/tutorial02.rst

@@ -47,7 +47,7 @@ What we've done?
 **Senior**
 
   Looks good to me, clean and simple, and it is a very good idea to use ``GET``
-  this as it wont change anything in the server. Restart Kapow! and try it.
+  here as it wont change anything in the server. Restart Kapow! and try it.
 
 **Junior**
 

docs/source/tutorial/tutorial03.rst

@@ -31,7 +31,7 @@ We need to filter
 
 **Senior**
 
-  Sounds great!  How could we live without Kapow! all this time?
+  Sounds great!  How we have lived without Kapow! all this time?
 
   As they requested, we can offer them with a parameter to filter the registers
   they want to pick and another parameter to limit the output size in lines.