Improvements in the database setup documentation
Improvements in the database setup documentation

Move the first sentence out of the H2 subsection to directly under
the section header.  This is an introduction that is relevant to
the whole section, not only H2.

Split the H2 subsection into paragraphs, and reword the first
paragraph a bit, to make it a bit easier to read.

Change-Id: If4db63dc3c2a405726edfb1ae939cd852309c07a

dwhipstock/gerrit,TonyChai24/test,hdost/gerrit,supriyantomaftuh/gerrit,gerrit-review/gerrit,gcoders/gerrit,thinkernel/gerrit,MerritCR/merrit,zommarin/gerrit,qtproject/qtqa-gerrit,jackminicloud/test,renchaorevee/gerrit,thesamet/gerrit,jackminicloud/test,netroby/gerrit,joshuawilson/merrit,Distrotech/gerrit,Team-OctOS/host_gerrit,jackminicloud/test,Team-OctOS/host_gerrit,jackminicloud/test,Team-OctOS/host_gerrit,hdost/gerrit,dwhipstock/gerrit,netroby/gerrit,bpollack/gerrit,Team-OctOS/host_gerrit,TonyChai24/test,Overruler/gerrit,midnightradio/gerrit,Team-OctOS/host_gerrit,bootstraponline-archive/gerrit-mirror,Seinlin/gerrit,bpollack/gerrit,pkdevbox/gerrit,TonyChai24/test,qtproject/qtqa-gerrit,MerritCR/merrit,renchaorevee/gerrit,hdost/gerrit,gracefullife/gerrit,supriyantomaftuh/gerrit,bootstraponline-archive/gerrit-mirror,basilgor/gerrit,hdost/gerrit,Saulis/gerrit,teamblueridge/gerrit,dwhipstock/gerrit,renchaorevee/gerrit,gerrit-review/gerrit,anminhsu/gerrit,WANdisco/gerrit,gerrit-review/gerrit,netroby/gerrit,qtproject/qtqa-gerrit,Distrotech/gerrit,MerritCR/merrit,anminhsu/gerrit,netroby/gerrit,Distrotech/gerrit,teamblueridge/gerrit,gerrit-review/gerrit,joshuawilson/merrit,MerritCR/merrit,gcoders/gerrit,quyixia/gerrit,dwhipstock/gerrit,thesamet/gerrit,zommarin/gerrit,netroby/gerrit,bpollack/gerrit,thesamet/gerrit,Distrotech/gerrit,TonyChai24/test,hdost/gerrit,teamblueridge/gerrit,midnightradio/gerrit,quyixia/gerrit,gracefullife/gerrit,zommarin/gerrit,Seinlin/gerrit,Distrotech/gerrit,joshuawilson/merrit,gracefullife/gerrit,midnightradio/gerrit,gcoders/gerrit,gracefullife/gerrit,quyixia/gerrit,Seinlin/gerrit,bpollack/gerrit,bootstraponline-archive/gerrit-mirror,GerritCodeReview/gerrit,MerritCR/merrit,renchaorevee/gerrit,thesamet/gerrit,GerritCodeReview/gerrit,gerrit-review/gerrit,ckamm/gerrit,Saulis/gerrit,netroby/gerrit,thinkernel/gerrit,dwhipstock/gerrit,ckamm/gerrit,gcoders/gerrit,quyixia/gerrit,bpollack/gerrit,WANdisco/gerrit,supriyantomaftuh/gerrit,supriyantomaftuh/gerrit,joshuawilson/merrit,thinkernel/gerrit,bootstraponline-archive/gerrit-mirror,renchaorevee/gerrit,anminhsu/gerrit,hdost/gerrit,dwhipstock/gerrit,ckamm/gerrit,Distrotech/gerrit,thinkernel/gerrit,thesamet/gerrit,midnightradio/gerrit,midnightradio/gerrit,anminhsu/gerrit,WANdisco/gerrit,Team-OctOS/host_gerrit,gracefullife/gerrit,bpollack/gerrit,qtproject/qtqa-gerrit,quyixia/gerrit,GerritCodeReview/gerrit,Overruler/gerrit,Overruler/gerrit,thinkernel/gerrit,zommarin/gerrit,WANdisco/gerrit,TonyChai24/test,GerritCodeReview/gerrit,renchaorevee/gerrit,MerritCR/merrit,pkdevbox/gerrit,qtproject/qtqa-gerrit,GerritCodeReview/gerrit,basilgor/gerrit,joshuawilson/merrit,WANdisco/gerrit,gerrit-review/gerrit,basilgor/gerrit,joshuawilson/merrit,Seinlin/gerrit,quyixia/gerrit,WANdisco/gerrit,netroby/gerrit,WANdisco/gerrit,Distrotech/gerrit,zommarin/gerrit,supriyantomaftuh/gerrit,pkdevbox/gerrit,jackminicloud/test,midnightradio/gerrit,qtproject/qtqa-gerrit,pkdevbox/gerrit,Saulis/gerrit,teamblueridge/gerrit,Saulis/gerrit,GerritCodeReview/gerrit,dwhipstock/gerrit,GerritCodeReview/gerrit,Saulis/gerrit,ckamm/gerrit,thinkernel/gerrit,gcoders/gerrit,jackminicloud/test,thesamet/gerrit,renchaorevee/gerrit,GerritCodeReview/gerrit,MerritCR/merrit,TonyChai24/test,Saulis/gerrit,Seinlin/gerrit,qtproject/qtqa-gerrit,bootstraponline-archive/gerrit-mirror,anminhsu/gerrit,anminhsu/gerrit,ckamm/gerrit,TonyChai24/test,thesamet/gerrit,teamblueridge/gerrit,pkdevbox/gerrit,Overruler/gerrit,Team-OctOS/host_gerrit,pkdevbox/gerrit,gcoders/gerrit,Overruler/gerrit,gerrit-review/gerrit,gcoders/gerrit,joshuawilson/merrit,supriyantomaftuh/gerrit,quyixia/gerrit,bootstraponline-archive/gerrit-mirror,anminhsu/gerrit,MerritCR/merrit,Seinlin/gerrit,supriyantomaftuh/gerrit,joshuawilson/merrit,thinkernel/gerrit,Overruler/gerrit,basilgor/gerrit,Seinlin/gerrit,pkdevbox/gerrit,basilgor/gerrit,jackminicloud/test,hdost/gerrit