Merge pull request #15 from xcchan/master

Fixed bug in resolveOperands
Tweaked the CSS styles for the commands menu on mobile and command in execution.
Merge branch 'master' of github.com:chewonit/cs3213-visual-ide-team20
Merge pull request #16 from xcchan/master

Resolved parameters
Made the run and stop buttons disabled accordingly. Disabled drag and drop when program is running.
Merge remote-tracking branch 'chewonit/master'