moodle-tool_mergeusers - #27 : adding specific columns for database table 'question' (https://moodle.org/mod/forum/discuss.php?d=258979#p1122814)
moodle-tool_mergeusers - #30 : description box as help icon

* moved the description box as help icon to build a simpler interface.
* updated text to remove the reference to 'ID' and replace them for 'user' references.
moodle-tool_mergeusers - #20 : user_lastaccess table to be merged

Related to issue #20:

* user_lastaccess was excluded from merging till now. As Luis de Vasconcelos suggested,
  this table should be included to be merged in order to make database consistent.
Merge pull request #32 from jpahullo/issue30

moodle-tool_mergeusers - #30 : description box as help icon
Merge pull request #33 from jpahullo/issue20

moodle-tool_mergeusers - #20 : user_lastaccess table to be merged
Merge pull request #31 from jpahullo/issue27

moodle-tool_mergeusers - #27 : adding specific columns for database table 'question'