changed file menu; added entry edit, moved reset program there and added entry check syntax
implemented syntax checking in class Ram, made the menu entry check syntax call the appropriate method and write the result into the log and the output
when the syntax is checked, the Ram reloads the program if there are changes
added handling of no registers, when filling registers, catching ArrayIndexOutOfBoundsExceptions when parsing line
increasing the current line is now done right before the output is returned, thus it is not increased, when there is an ArrayIndexOutOfBoundsException
handled case in reloadProgram when there are no registers
added if to writeLogText to determine whether there is text or not, resolves #6
removed debug output
added new submenu to reload a list of files loaded before
absolute file path is now used instead of just the filename, when handling loaded programs
added missing ActionListener
programs that have been loaded before, can now be chosen and they are loaded again, resolves #5, the reading of a file has been put into an own method for modularization
added new images for the wiki and documentation
added arrows to screenshot for explanation