initial cleanup of dimens.  Also, ScrollView added to layout to prevent loss of content viewing on small screens or screens in landscape.
Merge pull request #1 from NightlyNexus/master

initial cleanup of dimens and layout
put the topics in a ListView so no hardcoding TextViews for topics
put the topics in a ListView so no hardcoding TextViews for topics
Merge pull request #2 from NightlyNexus/master

put the topics in a ListView, so no hard-coding TextViews for topics
Green text, listviews, TopicListAdapter, Model
Test commit
Merge remote-tracking branch 'upstream/master'